xv1207

[ABC News @ABC]

Four people were killed and 90 remain trapped following a coal mine accident in northern China, according to Chinese state media. https://t.co/GHeNHBkuHP

[xv1207 @xv1207]

@cskun1989 恪守，就算是台湾人，读音不一样吗

[xv1207 @xv1207]

@cskun1989 习主席穿10几公分的高跟鞋累不

[李老师不是你老师 @whyyoutouzhele]

新西兰华人老师因“亲小孩”遭处罚，执照吊销，辩称“母国的文化差异”

5月7日，据新西兰先驱报报道，该教师名为 Ankui Gui ，2021年4月至5月期间，Gui 在先后在当地两家幼儿中心，“对多名儿童实施了不当身体接触”。

其不当行为表现为：

至少两次亲吻一名 3岁幼儿的嘴唇 。

亲吻一名 4岁幼儿的手背 。

在操场上将头埋入一名站在木箱上的 3岁女孩的胸部 。

而在接受审判时，他辩解称：自己并无恶意，也无性侵意图 。在 他的母国文化中，表达亲昵的方式与新西兰不同 ...他对未���及早理解新西兰的职业边界表示遗憾。他认为， 语言障碍影响了他对同事反馈意见的理解 。

Gui 曾向法庭申请“永久匿名”，理由是“姓名被公开后会导致自己在生活中失去面子”，该理由未被法庭采纳，并为了向社会公众提供警示，公开了他的姓名和样貌。他还辩称因经济拮据，无力赔偿，也被法院驳回。

新西兰教师纪律仲裁庭（NZTDT）撤销了他的从业执照，并被罚款3.5万新西兰元。

[Ihtesham Ali @ihtesham2005]

An MIT professor taught the same math course for 62 years, and the day he retired, students from every country on earth showed up online to watch him give his final lecture.

I opened the playlist at 2am and ended up watching three of them back to back.

His name is Gilbert Strang. The course is MIT 18.06 Linear Algebra.

Every machine learning engineer, every data scientist, every quant, every self-taught programmer who actually understands how AI works learned the math from this one man. Most of them never set foot on MIT's campus. They just opened a free playlist on YouTube and let him teach.

Here's the story almost nobody tells you.

Strang joined the MIT math faculty in 1962. He retired in 2023. That is 61 years of standing at the same chalkboard teaching the same subject to 18-year-olds.

The interesting part is what he did when MIT launched OpenCourseWare in 2002. Most professors were skeptical. They worried that putting their lectures online would make their classrooms irrelevant. Strang did not hesitate. He said his life's mission was to open mathematics to students everywhere. He filmed every lecture and gave it away.

The decision quietly changed how the world learns math.

For decades linear algebra was taught the wrong way. Professors started with abstract vector spaces and proofs about field axioms. Students drowned in the abstraction. Most never recovered. They walked out believing they were bad at math when they had simply been taught in an order that nobody's brain is built to absorb.

Strang inverted the entire curriculum.

He started with matrix multiplication. Something you can write down on paper. Something you can compute by hand. Something you can see. Then he showed his students that everything else in linear algebra eigenvectors, singular value decomposition, orthogonality, the four fundamental subspaces was just a different lens for understanding what the matrix was actually doing under the hood.

His rule was strict. If a student could not explain a concept using a concrete 3 by 3 example, that student did not actually understand the concept yet. The abstraction was supposed to come last, not first. The intuition was the foundation. The proofs were just confirmation that the intuition was correct.

The second thing Strang changed was the classroom itself. He said please and thank you to his students. Every single lecture. He paused mid-derivation to ask "am I OK?" to check if anyone was lost. He never used the word "obviously" or "trivially" because he knew exactly what those words do to a student who is one step behind. He treated 19-year-olds learning math for the first time the way he treated his own colleagues. With patience. With respect. With the assumption that they belonged in the room.

For 62 years.

The result is something that has never happened in the history of education. A single math professor became the default teacher of his subject for the entire planet.

Universities in India, China, Brazil, Nigeria, every country with a computer science department, started telling their own students to just watch Strang's lectures. The University of Illinois revised its linear algebra course to do almost no in-person lecturing. The reason was honest. The professor said they could not compete with the videos.

His final lecture was in May 2023.

The auditorium was packed with students who had never met him before. He walked to the chalkboard, taught for an hour, and at the end the entire room stood and applauded. He looked confused for a moment, like he genuinely did not understand why they were cheering. Then he smiled and waved them off and walked out.

His written comment under the YouTube video of that final lecture was four sentences long. He said teaching had been a wonderful life. He said he was grateful to everyone who saw the importance of linear algebra. He said the movement of teaching it well would continue because it was right.

That was it. No book promotion. No farewell speech. No legacy management.

The man whose teaching is the foundation of modern AI just thanked the audience and went home.

20 million views. Zero ego. The entire engine of the AI revolution sits on top of math that millions of people learned for free from one quiet professor in Cambridge.

The course is still on MIT OpenCourseWare. Every lecture, every problem set, every exam, every solution. Free.

The most important math course of the 21st century is sitting one click away from you. Most people will never open it.

[爆笑ツイート図鑑 @N3umu]

約40年前の日本のCMが海外でバズってる。1986年のナショナル乾電池のCMでは、小さなおもちゃの消防士が超高層ビルをよじ登る。スペック説明なし、伝えたのはただ一つ。「この電池は長持ちする。」

[Visegrád 24 @visegrad24]

Why aren’t these pictures from Iran all over the front pages of mainstream media outlets?

[平壤崔纽毕 @Pyongyang_cui]

浙大副教授「猪肉回」马晓霖自称祖上来自中东沙漠，多次吁请公交报站系统增设阿语，向它高贵的伊斯兰猪族血统致敬。

在网友的捧杀和怂恿下，它在校内基因所测了DNA：100%汉族。

[Iris @streetwize]

A smile that's worth everything: Captivity Survivor Rom Braslavski wrapped in the Israeli flag at Sheba Hospital 💙

[The White House @WhiteHouse]

America’s best days are still ahead.

Happy Birthday, Charlie. ❤️

[xv1207 @xv1207]

@LizhiQtian 拓蓝纸

[xv1207 @xv1207]

@cuichenghao 怪不得国内本科要4年，而国外基本都是3年

[明月山川 @MIYESAC]

恶意提问：你说中共都有东风61了，为啥还怕一把菜刀？

经典回答：东方61未必是真的，但是菜刀一定是真的！

[xv1207 @xv1207]

新西兰奥克兰，某繁忙的十字路口。
多年的媳妇儿熬成婆。

[xv1207 @xv1207]

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[xv1207 @xv1207]

@narendramodi 多往中国输送移民