Shadowing Practice: You Actually Share Your Brain With a Silent Stranger - Learn English Speaking with Video

Creating lesson...
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Your brain is two brains.
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Two hemispheres each doing half the work of being you.
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Half your vision goes to each and half your movement directed by each.
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Right controls left and left controls right.
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Your two brains co-ordinate through a wire of nerves, but this wire can be cut, and was, for a time, used as an epilepsy treatment.
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After the cut, people seemed the same, though their brain was split in-twain.
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Except, some post-split patients described that while selecting their morning outfit with right hand, left might come along to disagree.
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Actually, left hand might quite often disagree, which these split-brain patients found frustrating.
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What's happening?
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To investigate, remember, right brain sees and controls one half, while left brain controls and sees the other.
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But only left brain can speak.
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"Hello." Because that's where the speech center is located.
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Right brain, without this, is mute.
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In normal brains, this doesn't matter because each half communicates across the wire with the other.
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But, split-brains can't, and thus, you can show just the right brain a word, ask the person: "What did you see?", and you'll hear: "Nothing." Because, left speaking brain saw nothing.
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Meanwhile, right brain will use its hand to pick the object out of a pile hidden from left brain.
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This is deeply creepy.
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Ask "Why are you holding the object?" and speaking left brain will make up a plausible sounding, but totally wrong, reason.
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"I always wanted to learn how to solve one of these." Left brain isn't lying; it's just doing what brains do: creating a story that explains its past actions to its current self, a behavior which does rather cast doubt onto the notion of free will .
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Creating reasons for why it does things is just something left brains do.
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It happens in normal, healthy humans all the time, and if you think about it closely, you know you've done this.
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Back to experiments.
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Give right brain an object, ask the person "What's in your hand?" and they won't be able to say.
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"I'm not holding anything." And, when asked to draw, a split-brain can draw two separate objects simultaneously, with each hand, in a way unsplit-brains find challenging.
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These experiments on split-brain patients are deeply unsettling because they really point in the direction of a mute separate... intelligence...
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Something...
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Living in the skull.
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You can even ask questions of a split-brain and get disagreement on the answer.
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So, if your brain is split, who is the 'you' in this situation?
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From the outside, it's tempting to think of the part of the brain that's speaking as the person, but something is hearing and answering questions.
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And, though right brain can't speak, it does understand faces, which left brain can't.
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If this is you, you don't know who your friends and family are in a crowd.
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This act of cutting exposes two minds in one head, and the talking mind doesn't know there's someone else in the house.
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The left brain can describe the situation it's in, but nonetheless will constantly be surprised by right brain's actions and explain them away.
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There's a question to be asked here: Why, after separation, does right brain not totally freak out, but instead plays along helpfully, answering questions, and listening to left-brain's dumb stories about what's happening.
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- It's the best pony... I don't know.
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- Speculation time...
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But, one answer is the cutting doesn't make right brain a separate... intelligence... consciousness... person?
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but rather it has always been. In normal people, perhaps right brain rose up as a companion without a choice.
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Feeling at first somewhat equal partners, but then, as speech develops that it can't participate in, that increasingly becomes the central point of life, it resigns to mutely co-ordinate with left brain.
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At this moment, in your normal head, there are two of you watching this video: one having a 'mind = blown' moment, and the other mentally rolling its eye at the obviousness of it all.
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In split-brains, right doesn't freak out because not a whole lot has really changed.
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You might not agree, and maybe arguing right now at why it can't be possible, exactly as we would expect talking left brain to do.
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Speculation aside, split-brain patients show, at the very least, that in the mind, there is a separate...
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something that can hear and understand and respond, given the right circumstances.
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Your brain isn't entirely yours.
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Who is you?
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You is two.
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But we can go deeper. You are many.
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The pile of meat that's your body is made up of trillions of tiny individuals that have a life of their own.
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So, at which point do the many become one?
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What makes lots of tiny things you?
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Click here to go to our channel and watch the next part.
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Seriously. If you haven't checked out Kurzgesagt, then you don't know what you're missing.
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Kurgaset? Kurtzgaset?
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I never know.

What You'll Learn from This Video

This clip isn't just mind-blowing—it's a goldmine for building conversational fluency and critical listening skills. You'll practice following complex ideas (like split-brain science) while picking up how native speakers explain abstract concepts. Plus, the speculative tone teaches you to naturally introduce theories ("Speculation time...") and hedge statements ("perhaps," "maybe"), which are key for IELTS speaking practice.

Listen For These Sounds

Notice how the speaker links words smoothly: "rightbrain" (right + brain) and "splitbrain" (split + brain) blend into single sounds. Reductions like "it's" (instead of "it is") and "don't" (instead of "do not") keep the pace natural. Also, listen for the soft "t" in "treatment" and "patient"—native speakers often reduce this sound to a quick tap. These connected speech patterns are essential for shadowing technique, so replay the clip to catch them.

Say It Like a Native

Mirror the speaker's rhythm by stressing key words: "two BRAINS," "LEFT brain CONTROLS," "RIGHT brain is MUTE." The pauses before big ideas ("What's happening? To investigate...") create tension—copy that to make your speech more engaging. For IELTS practice, focus on the speculative sections: "one answer is the cutting doesn't make..." uses a rising intonation to invite curiosity. Try shadowing with a shadowing app to match the pace—you'll start sounding more natural in no time. Remember: the goal isn't just to repeat, but to feel the flow of how native speakers connect ideas and emotions.

So, next time you watch, ask: Is my left brain explaining this, or my right? Either way, you're mastering English—one mind-blowing concept at a time.

Grammar in this video

The structures the speaker uses most, with the exact words from the video:

StructureIn the video
Passive voice be + past participle — the focus is on what happens, not who does itcan be cut · was split · is located
Present perfect have/has + past participle — a past action that still matters nowyou've done · has always been · has really changed

What is the Shadowing Technique?

Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.

Shadowing technique: read the full step-by-step guide →