Luyện nói tiếng Anh bằng Shadowing qua video: The Rise Of Open-Source Software

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Much of the software that powers the world's largest companies, protects our personal data, or encrypts national security information is open to the public.

Phần lớn phần mềm vận hành các tập đoàn lớn nhất thế giới, bảo vệ dữ liệu cá nhân của chúng ta, hoặc mã hóa thông tin an ninh quốc gia đều được công khai cho mọi người sử dụng.

Anyone can download the source code behind Facebook's user interface, Google's Android operating system, or even

Bất kỳ ai cũng có thể tải xuống mã nguồn đằng sau giao diện người dùng của Facebook, hệ điều hành Android của Google, hoặc thậm chí

Goldman Sachs' data modeling program and use it as a building block for a totally new project.

chương trình mô hình hóa dữ liệu của Goldman Sachs và sử dụng nó như một khối xây dựng cho một dự án hoàn toàn mới.

What's more, lots of this software is actually developed collaboratively.

Hơn nữa, rất nhiều phần mềm này thực tế được phát triển theo phương thức hợp tác.

Created and maintained by an army of thousands, from unpaid volunteers to employees at competing tech companies.

Được tạo ra và duy trì bởi một đội ngũ hàng ngàn người, từ các tình nguyện viên không nhận lương đến các nhân viên làm việc tại các công ty công nghệ đối thủ.

As a kid in a small town in Virginia, I could get connected to the best developers anywhere on earth

Khi còn là một đứa trẻ ở một thị trấn nhỏ ở Virginia, tôi đã có thể kết nối với những nhà phát triển giỏi nhất ở bất cứ đâu trên thế giới.

and learn from them and even read the code that they'd written.

và học hỏi từ họ, thậm chí còn đọc những đoạn mã mà họ đã viết.

I really wanted to give back.

And these people were always my heroes.

So I wanted to participate too.

And my voice mattered.

It was just immediately I was hooked.

This is the collaborative world of open source software, where code is written and shared freely.

If individuals catch a bug or see an opportunity for improvement,

they can suggest changes to the code and thereby become a contributor to some of the biggest software projects on Earth.

But this model hasn't always been the norm.

At the dawn of the Internet era through the late 1990s, proprietary software proliferated.

Microsoft even went so far as to call open source un -American and bad for intellectual property rights.

Software was a finite commodity that people hoarded and wanted to sell as a product.

Open source software was only developed and maintained by a dedicated few.

And there was this fringe world,

there was this academic world who were creating software according to their own rules and sharing it publicly and making it free.

Certainly dreamed, like wouldn't it be awesome if we could sort of take over the world.

Now, open source has essentially taken over the world.

companies in every industry from Walmart to ExxonMobil to Verizon have open sourced their projects.

Microsoft has completely changed its point of view and is now seen as a leader in the space.

And in 2016, the U .S government even promised to open source at least 20 % of all its new custom -developed code.

So whether you know it or not, you are relying on volunteer labor in many cases of thousands of strangers from around the world.

In the 1970s, the MIT Artificial Intelligence Lab had a printer that regularly jammed.

So staff programmer Richard Stallman altered its source code so that when problems arose, it would send a message to everyone in the lab saying,

go fix the printer.

When the lab finally got a new printer, Stallman discovered its source code was inaccessible.

He asked for the code, got refused, got upset, and ultimately quit his job to develop a completely open operating system called GNU in 1983.

With this, Stallman spearheaded the free software movement from which the open source movement was born.

It's sort of a very natural way to work together.

Collectively, if everybody comes and contributes their piece,

you end up with something that's a lot greater than something that an individual could contribute on their own.

But throughout the 1980s and the 1990s, proprietary software still dominated.

And that was a very lucrative way of producing and selling software

and created an incentive for large technology companies to create a proprietary de facto standard.

It was against this backdrop that the open source operating system

Linux was unceremoniously released in 1991.

It incorporated many elements from Stallman's GNU project, but was mainly used by hobbyists looking for an alternative to Windows or Mac OS.

Throughout the decade, though, Linux gained momentum as large companies took advantage of its flexibility

and tweaked the software to their specific needs.

By the turn of the century, NASA, Dell, and IBM were all using it.

The platform itself changes nine times an hour.

10 ,000 lines of code are added to Linux every day.

About 5 ,000 lines are changed and about 8 ,000 lines are removed.

It is by far the highest velocity, most effective software development process in the history of computing.

As Linux grew, other open source projects were also gaining popularity, like the database management system MySQL, the Perl programming language, and the web server Apache.

But for the layperson at the turn of the century, the rise of these technologies could have gone unnoticed.

After all, hardly anyone ran

Linux on their personal computers.

But then, in 2008, Google released

Android devices, which run on a modified version of Linux.

Suddenly, the operating system blew up the smartphone market.

We are still overwhelmed with the amount of innovation that is happening in that ecosystem of Android.

Today there are over 2 .5 billion active devices using Android.

As Google demonstrated, businesses were increasingly relying upon this complex web of open source technologies to build products and platforms quickly.

And whether they knew it or not, this also meant that they were depending upon the vast open source community to maintain this software.

The ability for one company to produce the amount of software that's required for any modern technology product or service became overwhelming.

Today in a modern luxury automobile, there are more lines of software code than in an F -15 fighter jet.

There's just simply too much software to be written for any single organization to ride it themselves.

99 % of Fortune 500 companies use open source.

Every web server is pretty much Linux.

Most people choose to use open source programming languages.

It's this like amazing buffet.

You just come in and take this, this, this, this, this, and you slap together something.

You can build amazingly powerful products with very little work.

The sheer increase in volume drove a need amongst developers for a central repository where they could collaborate on these huge projects.

And in 2008, GitHub provided an answer.

What GitHub really did for open source is it kind of standardized the way

that people can contribute to open source projects and interface with them.

And so that any developer anywhere on earth knew how to contribute to a project on GitHub.

And that fed this explosion of open source activity.

Today, GitHub hosts the grand majority of the world's open source software projects.

And in 2018, Microsoft even acquired GitHub, affirming the tech giant's commitment to open source development.

We have about 140 million open source or software projects that are on GitHub,

and over 50 million of those have been added just in the last year.

So it's growing incredibly fast.

And the community has expanded far beyond idealistic hobbyists, as major companies are increasingly leading the charge, spearheading the development of open source projects in -house.

So we see companies like

Intel, Google, Facebook, Amazon, Microsoft, all contributing heavily to open source.

Googlers have been contributing to over 28 ,000 projects in 2018.

This number includes projects that Google has driven, as well as contributions it's made to projects led by other companies or individuals.

In the open source world, you have these fierce commercial rivals who collaborate every day together and they haven't signed anything.

And it's not just software companies.

ExxonMobil has open sourced its developer toolkit.

Walmart open sourced its cloud management platform.

And Goldman Sachs recently open sourced its data modeling program.

This open source way of working turned out to be better

because even in a big tech company where you might have 20 or 30 or 50 ,000 developers,

you can't compete with the 40 million developers that are now on GitHub working on open source every day.

Put simply, open source development has become the new norm.

And so I expect to see more and more investment into open source communities and more and more projects,

as well as companies finding ways to commercially monetize the activity that's collected across all of these different open source communities.

So how is open source monetized when the product is basically given away for free?

Basically, the answer lies in selling support services, subscriptions, and or commercial versions of the software.

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Red Hat, founded in 1993, was the first to figure out a successful business model, which relies upon selling support services for its operating system,

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Red Hat Enterprise Linux.

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Anyone can download the software for free.

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But if businesses want technical support and greater security, they'll need to buy a subscription.

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After decades of commercial success, IBM officially acquired

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Red Hat in 2019 for $34 billion.

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It was the largest software acquisition in history.

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It's really groundbreaking and it just shows the power and success of open source across the world, across the industries.

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While Red Hat's 100 % open source model has been hard to replicate,

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other companies like database program MongoDB and integration platform MuleSoft rely upon an open core model, meaning the basic features are free,

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but add -ons and other useful elements are proprietary.

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As these companies have racked up multi -billion dollar valuations, there's no doubt that on the enterprise level, there's big money in open source.

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But as for the individual developers, the hobbyists who contribute to and maintain open source projects just for fun,

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their path to profitability is much less clear.

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There are a lot of different models for how people make money in open source.

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One of the models is actually they don't.

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A lot of them are volunteers and they do this in the free time, in the evenings and on the weekends.

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But sometimes these just for fun side projects end up becoming widely used, critical to the internet infrastructure that we generally take for granted.

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Certain projects get so popular and so widely used that, you know, they're in every product.

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They're used by every company.

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And then this result of like, you know, massive

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Fortune 100, Fortune 500 companies building their businesses on top of this code that's written by hobbyists for who knows what reason, right?

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As one might imagine, problems can arise

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when critical systems are based on software

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that's maintained by unpaid volunteers with no professional obligation to see to the maintenance of the project.

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This issue came to a head in 2014.

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When the security vulnerability dubbed Heartbleed was found in OpenSSL,

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an open source encryption technology that's used by the majority of web servers to protect users' personal data.

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The flaw has gone undetected for about two years and has exposed millions of usernames, passwords and possibly credit card info as well.

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They left this lock capable of being picked because they didn't write the code quite right.

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And when they looked into it, the OpenSSL team was tiny.

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It was just a few people who were mostly working on donations and their donations had started to dry up.

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And understandably, these incredibly talented programmers had a hard time justifying spending full time on this,

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even though it was one of the most important building blocks of the entire Internet.

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Ultimately, organizations like the Linux Foundation pulled together to provide financial support for OpenSSL, as well as other critical pieces of underfunded open source software.

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But the disaster served as a wake -up call for an industry that still largely relies upon unpaid labor.

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The burden on the maintainer can become quite intense.

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You have sort of all these businesses coming in and saying, like, you know, your code is broken.

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It's preventing me from getting my job done.

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And so you get this, like, almost intense guilt.

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I feel like a lot of maintainers have a guilt.

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Now, companies are taking note and helping to formalize new funding models.

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In 2019, GitHub rolled out their Sponsors program, which allows developers to give and receive recurring donations for their work.

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We already have some people who are making their full living on GitHub Sponsors, so they don't have another job.

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And so that's huge for us.

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And that's really the key number that we are trying to move up.

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For developers like Aboukadije, making a full -time living around open source is indeed the dream.

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I prefer the freedom of being able to just follow my interests wherever they go

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and solve whatever problems I think are interesting.

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I'll never make money from some of the stuff I've worked on,

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but I think I've done a lot of good in the world by working on it.

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It's still early days, but if funding models like GitHub sponsors pay off,

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we may see a new class of software engineers eschewing traditional tech jobs in favor of independent, open -source work.

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Open -source has created so much technological progress, but because it never quite solved this funding problem in those early years,

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I think that we are at a point now where we could lay the groundwork for the next stage of open source.

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This could also mean expanding the cooperative ethos to industries outside of software.

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As the idea of sharing technology and collaborating collectively expands,

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we're moving into open hardware initiatives, data sharing initiatives.

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And that's really going to be the future.

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After all, the success of open source reveals that collaboration and knowledge sharing are more than just feel good buzzwords.

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They're an effective business strategy.

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And if we're going to solve some of the world's biggest problems, many believe that we can't afford to hoard our resources and learnings.

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We have environmental concerns.

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We're trying to understand things like cancer and Alzheimer's.

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These are major collaborative efforts.

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The complexity of building these technologies isn't going down.

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It's only going up.

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We can get that technology out there faster when everybody works together.

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Thank you.

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Từ vựng và ghi chú luyện nói cho bài học này

Bài luyện nói này dựa trên video “The Rise Of Open-Source Software”. Những từ được nhắc lại nhiều nhất trong bài: source, software, project, companies, code. Video này có 95 câu và 2260 từ để luyện shadowing. Phần lời nói dài 13:43. Người nói nói với tốc độ tự nhiên, khoảng 165 từ mỗi phút, gần với hội thoại hằng ngày. 84% số từ nằm trong 3.000 từ tiếng Anh thông dụng nhất; phần còn lại nên xem trước khi luyện.

Từ vựng quan trọng trong video

15 từ đáng học trong video, kèm phiên âm và nghĩa:

Từ	Phiên âm	Nghĩa
developer danh từ	/dɪˈvɛləpɚ/	nhà phát triển
contribute động từ	/kənˈtɹɪb.jut/	đóng góp
rely động từ	/ɹɪˈlaɪ/	tin cậy, dựa vào
volunteer danh từ	/ˌvɑlənˈtɪɹ/	quân tình nguyện, tình nguyện viên
server danh từ	/ˈsɝvɚ/	trình chủ, máy chủ
solve động từ	/sɒlv/	giải quyết
donation danh từ	/doʊˈneɪʃən/	sự tặng
printer danh từ	/ˈpɹɪntɚ/	máy in
enterprise danh từ	/ˈɛntəˌpɹaɪz/	xí nghiệp
incredibly trạng từ	/ɪŋˈkɹɛdɪbli/	khó tin nổi
database danh từ	/ˈdeɪtəˌbeɪs/	cơ sở dữ liệu, CSDL
acquire động từ	/əˈkwaɪɚ/	đạt được, kiếm được
guilt danh từ	/ɡɪlt/	điều sai quấy, lỗi
programmer danh từ	/ˈpɹoʊɡɹæmɚ/	lập trình viên
cloud danh từ	/ˈklaʊ̯d/	mây

Cụm động từ bạn sẽ nghe

Từ	Nghĩa
blow up động từ	nổ
give back động từ	trả, trả lại
go up động từ	lên

Ngữ pháp trong video

Những cấu trúc người nói dùng nhiều nhất, kèm đúng cụm từ trong video:

Cấu trúc	Trong video
Thì hiện tại hoàn thành have/has + quá khứ phân từ — việc đã xảy ra nhưng còn liên quan đến hiện tại	hasn't always been · have been added · has expanded
Câu bị động be + quá khứ phân từ — nhấn vào việc xảy ra, không phải người làm	is actually developed · is written · was only developed
Mệnh đề quan hệ who / which + mệnh đề — thêm thông tin về người hoặc vật	people who were · people who are

Phát âm cần chú ý

Người nói dùng 20 dạng rút gọn, ví dụ they're, we're, can't. Hãy nói theo dạng ngắn đúng như bạn nghe.

Âm “th”: thereby /ðɛɹˈbaɪ/, ethos /ˈiθɑs/
Âm “sh” và “zh”: donation /doʊˈneɪʃən/, initiative /ɪˈnɪʃ.ə.tɪv/, subscription /səbˈskɹɪpʃən/, essentially /ɪˈsɛnʃəli/, luxury /ˈlʌk.ʃə.ɹi/
Từ dài — đặt trọng âm cho đúng: developer /dɪˈvɛləpɚ/, proprietary /pɹəˈpɹaɪ.ə.tə.ɹi/, collaborate /kəˈlæb.ə.ɹeɪt/, incredibly /ɪŋˈkɹɛdɪbli/, initiative /ɪˈnɪʃ.ə.tɪv/

Những âm người Việt thường gặp khó:

Cụm phụ âm cuối — đọc đủ từng âm, đừng nuốt âm cuối: solve /sɒlv/, expand /ɪkˈspænd/, intense /ɪnˈtɛns/, guilt /ɡɪlt/, vast /væst/
Âm /tʃ/, /dʒ/ và /ʒ/ — tiếng Việt không có, đừng đọc thành “ch” hay “gi”: infrastructure /ˈɪnfɹəˌstɹʌkt͡ʃə/, intellectual /ˌɪntəˈlɛkt͡ʃʊəl/, stranger /ˈstɹeɪnd͡ʒɚ/, explosion /ɛkˈsploʊ.ʒən/, jam /ˈd͡ʒæm/
Âm /æ/ — mở miệng rộng hơn âm “e”: expand /ɪkˈspænd/, collaborate /kəˈlæb.ə.ɹeɪt/, collaborative /kəˈlæb.ə.ɹə.tɪv/, programmer /ˈpɹoʊɡɹæmɚ/, vast /væst/

Cách luyện với video này

Nghe hết video một lần, chưa cần nói, và ghi lại những từ bạn chưa biết.
Bắt đầu ở tốc độ 0,75×, nói đuổi từng câu, rồi quay lại tốc độ bình thường khi đã quen.
Ghi âm giọng mình rồi so với bản gốc, chú ý các từ như developer, contribute, rely.

Phương Pháp Shadowing Là Gì?

Shadowing là kỹ thuật học ngôn ngữ có cơ sở khoa học, ban đầu được phát triển cho chương trình đào tạo phiên dịch viên chuyên nghiệp và được phổ biến rộng rãi bởi nhà đa ngôn ngữ học Dr. Alexander Arguelles. Nguyên lý cốt lõi đơn giản nhưng cực kỳ hiệu quả: bạn nghe tiếng Anh của người bản xứ và lặp lại to ngay lập tức — như một "cái bóng" (shadow) đuổi theo người nói với độ trễ chỉ 1–2 giây. Khác với luyện ngữ pháp hay học từ vựng bị động, Shadowing buộc não bộ và cơ miệng phải đồng thời xử lý và tái tạo ngôn ngữ thực tế. Các nghiên cứu khoa học xác nhận phương pháp này cải thiện đáng kể phát âm, ngữ điệu, nhịp điệu, nối âm, kỹ năng nghe và độ lưu loát khi nói — đặc biệt hiệu quả cho người luyện IELTS Speaking và muốn giao tiếp tiếng Anh tự nhiên như người bản ngữ.

Phương pháp shadowing: đọc hướng dẫn từng bước đầy đủ →

Luyện nói tiếng Anh bằng Shadowing qua video: The Rise Of Open-Source Software

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Phát âm cần chú ý

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Phương Pháp Shadowing Là Gì?