Shadowing Practice: Stanford CS Professor: AI Can Code. That’s Why You Should Learn Programming | Chris Piech - Learn English Speaking with Video
Les maken...
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Hi, I'm Chris Peach.
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I'm a professor here at Stanford University.
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I teach some large intro to computer science classes, some intro to math for AI.
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Code in Place, if people don't know it, it's an online class where you can learn to program.
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And the special thing about Code in Place is that it's the class in the world with the most teachers.
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And there's about 17,000 students and more than 1,000 teachers.
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We've been doing Code in Place for six years.
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So we did Code in Place before Cursor and Cloud Code and Code in Place after.
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A few observations.
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One, our enrollment basically doubled oh my gosh, all these people want to learn how to code.
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You can expand the question.
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You could say, should I learn to program?
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You can also say, should I learn probability?
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Like AI can code, but AI can also do probability.
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Should I learn to write?
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AI can write.
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I think the wrong answer would be no, no, no. We're not giving up on the next generation being smart.
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Yes, you should learn how to formalize an argument.
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Yes, you should learn the depth of probabilistic reasoning.
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And yes, you should learn how to program.
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If AI is able to do those things, Your abilities may be magnified, but I imagine in the future,
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it will still be important to be smart in those spaces.
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I'm seeing more people with a motivational crisis than I have in the past, and that makes sense.
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There's more uncertainty in the world.
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You know, you can think about what can I contribute with AI of 2026, but I think students are faced with a much harder problem of thinking about, well, if I'm starting a four-year program,
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I have to think about what jobs are going to exist in 2030 when AI is four years more advanced, and that's a lot of uncertainty for students, and I empathize with this quite a lot.
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I think naturally that leads to some motivational problems.
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When am I actually getting something out of AI and when have I given away too much of the growth?
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I suppose if I start outsourcing, at what point will I no longer be able to do that?
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Like that really critical piece.
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I think all students have felt like this.
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Like if you have AI write too many of your essays, at what point are you no longer able to write an essay?
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If you have AI write too much of your code, at what point can you no longer do that valuable piece of the architecture?
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So I suppose that's the part where like I think it's fun to use AI.
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I think people should be playing around with it, but you should be self-aware
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and you should be self-aware of like are you also growing alongside the AI
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and you should care so much about your own personal growth.
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I was born in Nairobi, Kenya.
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When I was 12, I moved to Kuala Lumpur, Malaysia.
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I ended up coming to the US for university.
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I was just a curious human.
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I wasn't set on being a professor from day one.
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I just liked learning and I liked interesting problems.
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When I came to Stanford, I'd done a little bit of coding, but I really didn't know how to program.
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But like I had to fill an elective.
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So I just had to take a class and I was like, okay, I'll do the programming class.
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And my teacher did the most wonderful thing.
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They said, at this point, I'm gonna have a challenge.
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Everyone in class, go make the most wonderful things with what you've learned in the first two weeks of programming.
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And I found myself able to put like 40 hours of extra work beyond my normal schooling into this challenge
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because I was so excited.
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And then eventually I discovered that I was so curious about how people learned, and I decided Professor was the right thing for me.
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So Carol speaks this thing called Python, which we're going to be using as our programming language throughout the course.
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So Carol is our lovable robot, and Carol lives in a world.
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We think of the world as kind of having a north, west, south, and east, and having compass directions.
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Come on, Carol, turn left.
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And then turn left.
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and then turn left, and then turn right.
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It's the class in the world with the most teachers.
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There's one teacher for every 10 students, and there's about 17,000 students and more than 1,000 teachers.
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So what problem was I trying to solve?
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Let's go back in time.
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It's early days in the pandemic.
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I'm about to teach Stanford's flagship intro to coding class, and I've been told that everything's going to be online.
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And in this moment, we're thinking, the world is suffering.
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While we're putting the class online, Is there something that we can also do to help the world?
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We can just put our videos online and we thought people might get a little bit out of it, but we know that it would be a lot less than what our Stanford students get
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because our Stanford students get the special sauce of Stanford education.
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And the special sauce of Stanford education for Intro CS is you get a section leader.
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You get somebody who's just a little bit older than you, a little bit further along in their career, who's gonna take time to help you grow.
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One of the common misconceptions is just thinking that AI tutors will solve everything.
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We basically have AI tutors already, but that isn't moving the needle in the way people expected.
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So over the last six years, so we've now done this six times, We've tried a lot of different experiments where we gave people different dosage of AI, and we have learned something very surprising.
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If we give people AI, and just like, here's a chat bot, use it to learn, predictably, people will drop out.
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People get demotivated.
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It is demotivating to have AI thrown at you at the wrong moment of your learning.
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We have found very nuanced ways where we can use AI that actually helps people learn.
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But if you contrast that with humans, so if I throw AI at you, you're probably gonna become a little bit demotivated statistically.
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But what happens if I throw a human at you?
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Imagine you're just programming in code in place.
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You might get a pop-up and it says, hey there's a teacher online and they'd like to spend 10 minutes with you.
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Do you want to talk to them?
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If you hit yes, your probability of completing the course goes up 10 percentage points.
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So you must be thinking, oh the humans must be saying the right things and the AI must be saying the wrong things.
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We've looked at these conversations.
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The AI was correct.
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It wasn't hallucinating, not for intro programming.
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And the humans weren't always correct.
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but the human touch is special.
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It's motivating and I think we all need motivation right now.
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Everyone needs something to convince them I'm not gonna make Claude do all the thinking for me.
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Like to actually do the thinking yourself takes extra energy.
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Crown jewel of education has always been motivation
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and it's a lot more motivating for me to say I care about you being a smart person.
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I'm not giving up on you being a smart person this time of AI.
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Let's work on your foundations, and then when you're done with your foundations, I'll teach you how to code with AI." That works so much better.
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When I look at chatbots, I think they do a good job of answering my question, but one challenge I would pose to anybody thinking about how
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to make these work better for education is how do you get it to inspire?
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Sometimes I will inspire my students in a deep way, and it could be like you come into my office and be like, hey, do you want to see something really cool about probability
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and I just showed them something really neat and they weren't even thinking about it.
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That wasn't the question they came in with but then they they feel
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that like love and like that inspiration and as I said
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if I can flip the switch of getting the student
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so curious that they can't help
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but learn like the rest of the day all they can think about is the problem
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that I just posed to them or that cool thing I showed them if that curiosity gets ignited
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then I feel like they'll get there and when I look at current chatbots they are not igniting curiosity that much.
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It's not like you never show up to chat to a PT and it's like, hey, do you want to just see something that is going to make your mind explode that will like, you know, pull you in?
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Now, as a teacher, I can do that because I have some context on my students.
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I know largely where they are and largely where they're trying to go.
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So I can be very delicate in the choice of the inspiring example or the inspiring challenge to pose to my students.
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If If you just think an AI tutor will solve the clarity problem, you might miss it, the bigger piece of the puzzle.
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And I feel like if we leverage this, we can have a nicer world.
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The deepest understanding doesn't come in the moment.
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It's built beforehand.
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Same goes for us.
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Before the main interview, we always do a pre-interview call.
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And Granola quietly transcribes it in the background.
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No bot ever joining, turning it into clean notes.
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So we built our own recipe for this.
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It's called Interview Prep.
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We wrote the prompt once, with everything we want before a shoot, and now it's one click every time.
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Then, minutes before the cameras roll, we run it right on that pre-interview call.
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In seconds, it surfaces the story worth telling, the threads worth pulling, and the questions worth asking.
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It's like having the whole transcript in your head without ever opening it.
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So we sit down already knowing where it should go.
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It's not a generic checklist.
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Every line is drawn from the real discussion we just had, shaped by exactly how we like to prep.
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Less time scrambling to remember, more time fully present in the room.
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Turns out, the more you prepare, the more you understand.
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Try recipes today.
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New users get 100% off their first month at the link in the description.
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I'm seeing more people with a motivational crisis than I have in the past, and that makes sense there's more uncertainty in the world.
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You know, you can think about what can I contribute with AI of 2026, but I think students are faced with a much harder problem of thinking about, well, if I'm starting a four-year program,
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I have to think about what jobs are going to exist in 2030 when AI is four years more advanced.
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And that's a lot of uncertainty for students.
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And I empathize with this quite a lot.
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In five to 10 years, many things will change.
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The future has always been unpredictable.
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It's always been the case that if you ask people to project what jobs will be the right jobs, five to ten years, people always get it wrong.
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Here's an interesting anecdote though.
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So when I was young, I'm an old man now, but when I was young, and this is my PhD,
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it was around the time that one of my now colleagues was making some of the first major milestones in self-driving cars.
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And this is back in like 2011, 2012.
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And at that moment, you would see this car drive, and you'd think, oh my god, what does it mean to be a taxi driver or what does it mean to be a truck driver?
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But in fact, what happened is the truck driver profession has been growing at a very healthy rate.
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Now, I don't know what the future holds for truck drivers.
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Maybe one day we'll come to an inflection point.
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But there was a lot of reasons that people underestimated.
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They underestimated like, well, if you have valuable cargo, you need a person who's responsible.
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Or the long tail sort of experiences.
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There's always something different happening on a highway.
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99% of the experiences can be the same, but like that 1% of things that are different, it's so hard to have an AI master all of them.
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I think one day eventually we'll have fully self-driving cars
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and we'll live in a world where all our cars are driven by an AI system.
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But what I was surprised about was how grossly we overestimate how quickly we get there.
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I think everyone who's worked deeply with AI has had this experience of by outsourcing a lot of thinking to AI,
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I am getting more separated from problem-solving myself.
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A good example right now is I program with AI a lot, but I happen to know a lot about programming and architecture.
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And if I don't know a lot about programming and architecture, AI will start to make some poor decisions, which I might not experience the first time I make a prototype,
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but like five weeks down the line when students are actually using my thing, they might start to hit weird bugs.
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And if I don't understand the architecture, I can't help them.
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I suppose if I start outsourcing, at what point will I no longer be able to do that?
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Like that really critical piece.
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I think all students have felt like this.
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Like if you have AI write too many of your essays, at what point are you no longer able to write an essay?
167
If you have AI write too much of your code, at what point can you no longer do that valuable piece of the architecture?
168
So I suppose that's the part where like, I think it's fun to use AI.
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I think people should be playing around with it.
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But you should be self-aware.
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and you should be self-aware of like are you also growing alongside the AI
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and you should care so much about your own personal growth.
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When you're learning how to program, largely you can separate it into two pieces.
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One piece is you're learning the syntax of how do we tell computers to do things
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and the other thing you're learning is basically problem solving like how do you take big problems
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and break them down into small pieces, how do you set it up so that data can speak to algorithms.
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How do you think about algorithms?
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So I'm going to say AI is going to get really, really good at just the syntax.
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It's less important in the future that you've memorized every command.
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It's probably more important that you know how to problem solve.
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So while you're learning to program, really focus on that problem solving ability.
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There's one thing about coding that's special.
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You get immediate falsifiable feedback.
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Like if your logic is wrong, your thing doesn't work and you get to see that and you get to iterate quickly.
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Whereas if you apply problem solving to life, you could make a poor decision, but the feedback cycle is so slow that you don't get to practice getting better and better at making decisions.
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So there's a couple of things about coding that makes it particularly good at teaching how to problem solve.
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The question, how did you become like a really high contributor engineer?
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You might not find my answer that surprising, but it's like, it's time on task.
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It's like, how much time are you spending actually creating things, and I'm going to separate you creating versus you giving it to CloudCode.
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Now, by the way, you know what I would do if I was a young person?
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I would make a lot of prototypes with CloudCode, and I'd say, CloudCode, teach me all the most important things that you did in order to create this, and I would iterate that way, and I'd get lots of experience,
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so I can try and figure out what are the most important concepts.
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I'll give your young engineers a particular challenge.
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As I said, it's a confusing time, but there's an opportunity that didn't exist before.
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One of the things that's happened is barriers to entries have been cut.
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You could be a 12th grader, so an 18 year old with a friend.
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You might be able to make a high quality startup.
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The two of you could make a pretty impressive code base that solves an interesting problem.
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There is a real art form to knowing what is a valuable problem to solve.
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And I think more and more juniors, engineers get to engage with that art form.
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Like what is worth actually making?
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What do users want?
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What's the feature that will help them make progress in whatever their problems are?
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So that ability to interface between what are computers able to do
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and what do humans actually need has always been a critical high-order skill
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and I think if I were a junior engineer I would start working on that skill now.
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I wouldn't wait till I was a senior engineer.
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If you start with the premise that my children will become smart people, and your children will become smart people, if you don't have children then maybe your nephews and nieces will become smart people,
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you start from the premise that the next generation will be filled with people who are smarter than we are.
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Then you're like, okay, how do we get them to that point?
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And then you look at any subject, probability, computer science, and when you look at any subject there's often foundational concepts,
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and then you'll have layers of complexity built on top of it.
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If you expect them to become smarter than you are, it's really hard to skip the foundations.
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And one way of thinking about that is we've had calculators to do multiplication for a long time.
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Kids still need to learn multiplication.
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Now there's a subtle difference.
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The concept of multiplication is so critical, but actually knowing how to do the rote.
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You know, if I ask you like, what 13 times 7, go quick.
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That's not as important as just knowing what is multiplication.
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But you can't skip the foundations, but you can maybe be more artful about what you focus on.
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I kind of take it as an axiom that I'm not giving up on the next generation.
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Honestly, the people I've seen get most lost and most demotivated in this mode of AI
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are sometimes the ones who are overthinking it.
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I had a student, he was just doing such wonderful things.
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He was using AI, he was solving problems, he was learning amazing things.
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I asked, hey, wonderful student, like, what are you thinking about?
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And he says, I actually don't think about it.
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I don't really think about the future of AI and that allows me to thrive.
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And like, you need pause?
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I think about AI all the time.
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I feel like I think about AI 10 times a day.
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And then the simplicity of like, no, I'm just gonna be curious and learn.
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Since that day, I start my day with the axiom.
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I don't ask why I care about the next generation being smarter.
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I take it as a truth.
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I want this and I will work towards it.
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It's a tool and it will multiply humans.
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So when humans are at our best, we can use this tool to multiply us.
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Like the doctor who really cares about their patient now has a tool that they can do more, faster, more accurately.
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The teacher who really cares about their students, who is passionate about them learning, they can go further with their students and they can do more.
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Also, I get to see young people all the time.
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And I would say that gives me inspiration, seeing their self-awareness, how critical their thinking,
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seeing them blossoming, it gives you optimism.
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If I was a young person right now, the most valuable thing is that you have the self-awareness.
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You should also have the goal that I will become smarter.
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Chris is not giving up on you.
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You should not give up on yourself either.
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I have two kids under five and you know what?
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They're going to live in an awesome world.
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Like we're going to adapt.
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We're going to figure things out.
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They're going to still have curiosities.
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They're going to still grow their minds and we're going to keep every day working towards that.
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The top engineer might not be the person who knows all code.
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Maybe the top engineer is a person who can relate the real world human problems into the world of apps, into the world of data science, and into the world of research.
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So go make stuff.
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Make stuff that people use, make stuff that people love, and in that process of iteration,
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you have an opportunity to become excellent at coding and excellent at problem solving.
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Just take axioms.
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You will become smarter than you were yesterday.
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Start your day like that.
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Woordenschat en spreektips bij deze les
Deze video bevat 261 zinnen en 3585 woorden om na te spreken. Het gesproken deel duurt 17:49. De spreker praat snel, ongeveer 201 woorden per minuut, dus reken op verbonden en ingeslikte klanken. 84% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden; de rest kun je beter vooraf bekijken.
Belangrijke woorden in deze video
15 woorden uit de video die het leren waard zijn, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| solve werkwoord | /sɒlv/ | oplossen |
| architecture zelfstandig naamwoord | /ˈɑː.kɪˌtɛk.t͡ʃə/ | architectuur, bouwstijl |
| probability zelfstandig naamwoord | /ˌpɹɑ.bəˈbɪl.ə.ti/ | waarschijnlijkheid |
| intro zelfstandig naamwoord | /ˈɪntɹoʊ/ | intro |
| curious bijvoeglijk naamwoord | /ˈkjʊɹ.i.əs/ | nieuwsgierig |
| essay zelfstandig naamwoord | /ˈɛs.eɪ/ | essay, opstel |
| uncertainty zelfstandig naamwoord | /ʌnˈsɜːtənti/ | onzekerheid |
| inspire werkwoord | /ɪnˈspaɪə(ɹ)/ | inspireren |
| curiosity zelfstandig naamwoord | /ˌkjʊɹ.iˈɑ.sə.ti/ | nieuwsgierigheid |
| tutor zelfstandig naamwoord | /ˈtjuːtəː/ | studiebegeleider, mentor |
| alongside | /əˌlɔŋˈsaɪd/ | aan de zijde van |
| awareness zelfstandig naamwoord | /əˈwɛɹ.nəs/ | besef, bewustzijn |
| skill zelfstandig naamwoord | /skɪl/ | bekwaamheid, vaardigheid |
| inspiration zelfstandig naamwoord | /ˌɪn.spɪˈɹeɪ.ʃən/ | inademing, inademen |
| contribute werkwoord | /kənˈtɹɪb.jut/ | bijdragen |
Phrasal verbs die je zult horen
| Woord | Betekenis |
|---|---|
| end up werkwoord | belanden, terechtkomen |
| figure out werkwoord | uitvogelen, er achter komen |
| get off werkwoord | van ... afgaan |
| give away werkwoord | weggeven |
| pop up werkwoord | opduiken, te voorschijn komen |
| sit down werkwoord | gaan zitten |
| turn out werkwoord | uitvallen, resulteren |
Uitspraak om op te letten
De spreker gebruikt 84 samentrekkingen en verkorte vormen, zoals I'm, don't, you're. Spreek ze kort uit, zoals je ze hoort.
- De “th”-klanken: algorithm /ˈælɡəɹɪðm̩/, thread /ˈθɹɛd/, mathematics /mæθ(.ə)ˈmæt.ɪks/, thrive /θɹajv/, empathize /ˈɛmpəˌθaɪz/
- De klanken “sh” en “zh”: inspiration /ˌɪn.spɪˈɹeɪ.ʃən/, motivation /ˈmoʊ.tə.veɪ.ʃən/, contrast /kənˈt(ʃ)ɹæst/, observation /ˌɑbzɚˈveɪʃn̩/, profession /pɹəˈfɛʃ.ən/
- Lange woorden — let op de klemtoon: architecture /ˈɑː.kɪˌtɛk.t͡ʃə/, probability /ˌpɹɑ.bəˈbɪl.ə.ti/, uncertainty /ʌnˈsɜːtənti/, curiosity /ˌkjʊɹ.iˈɑ.sə.ti/, inspiration /ˌɪn.spɪˈɹeɪ.ʃən/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Begin op 0,75× snelheid, spreek zin voor zin na en ga terug naar normale snelheid zodra het makkelijk gaat.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als solve, architecture, probability.
Grammatica in deze video
De structuren die de spreker het meest gebruikt, met de exacte woorden uit de video:
| Structuur | In de video |
|---|---|
| Present perfect continuous have/has been + -ing — iets dat eerder begon en nog bezig is | We've been doing · has been growing |
| Present perfect have/has + voltooid deelwoord — iets uit het verleden dat nu nog telt | have felt · you've learned · I've been told |
| Lijdende vorm be + voltooid deelwoord — het gaat om wat er gebeurt, niet om wie het doet | may be magnified · are faced · was born |
| Betrekkelijke bijzinnen who / which + zin — extra informatie over een persoon of ding | people who are · ones who are · teacher who really |
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.