Greg Yan

Curious to see the wonder of The Nature and People w naked eyes. Fans of Rafa Nadal & Stephen Curry.

[Greg Yan @GregYanBJ]

@BleacherReport Pussy Bron

[Timothy Bates @timothycbates]

Shocked this dropped with so little noise. New PNAS paper on a near-complete national sample of Norwegian men shows the Flynn effect didn’t just stop — it reversed. And for sons of the highest-income fathers, the reversal started in 1968.

[Greg Yan @GregYanBJ]

我的X9周年纪念日！

[CognitiveMetrics @CognitiveMetric]

A 9-year-old child with an IQ of 130 has about the same intellectual ability as a 100-IQ adult. That is, they answer questions of the same difficulty with the same probability of success.

IQ scores are relative and usually age-normed. But because Rasch scores put a person's ability and an item's difficulty on the same absolute scale, you can compare a child and an adult by the same underlying level of performance rather than just their age-normed IQ.

This shows many interesting facts. For instance:

- A 10-year-old at 145 IQ and a 13-year-old at 130 IQ are at the same level of intellectual ability.

- The difference between the smartest and least intelligent adults in a representative group of 40 people is roughly as large as the difference between an average adult and an 8-year-old child.

[Greg Yan @GregYanBJ]

@Math_files amazing: 2 ÷ 47 = 0.0425531914893617021276595744680851063829787234042553191489361702127659574468085106382978723404255319...

[Greg Yan @GregYanBJ]

@stats_feed 回=two mouths=circle/surround/change

[Greg Yan @GregYanBJ]

@WangDa316158 一个轮回周期🔁

[Greg Yan @GregYanBJ]

@cptdankkk It sounds to make sense

[Greg Yan @GregYanBJ]

哇哦，改写文明进程的想法应该是马斯克最革命性的行动指引！

[谢嘉琪 Jiaqi @XieJackie]

挖到一段2007年��乎失传的马斯克老采访，看完真的感慨，这人二十多年对SpaceX的想法一点没变。太可怕了

当年他就认准要送人类上火星。那会贝佐斯的蓝色起源、NASA还有中国全是对手。但他回答：“我们没有真正的竞争对手。” 这话真应验了。现在对于特斯拉FSD他也在说同样的话。

他说SpaceX最该担心的 从来不是竞品，而是自己内部犯错。他在特斯拉上也说过类似的话，如果特斯拉不能真给社会创造价值，被淘汰他都无所谓。

他当年在SpaceX只有一个小格子间，和大家坐在一起，没有单独的大办公室。这种反官僚、扁平化的风格，20多年后依然没有改变。

主持人问他有钱了不想去沙滩躺平吗？他说闲着对他是折磨。他创立公司只看这件事成了能不能改变世界。轻松来钱的路子遍地都是，他偏选火箭、电车这种烧钱又难成的赛道，早年做互联网那会儿行业都没人盈利，他照样一头扎进去。

SpaceX能走到今天真不是运气，从头到尾就一份初心死磕到底。

[Greg Yan @GregYanBJ]

无论谁赢🉐决赛，今年的法网必将产生新的女子冠军！

哇，不仅如此，今年法网还将迎来新的男子冠军，捧起火枪手杯！

[Greg Yan @GregYanBJ]

戏剧法网2026
法网上的传奇相比于其他三大满贯赛可以说更加具有戏剧性传奇色彩。纳达尔史无前例的14个火枪手杯，现在正在上演的有史以来首位晋级罗兰加洛斯决赛的资格赛选手：马哈·赫瓦林斯卡！赛前她在红土场地上仅有 2 场巡回赛级别胜利，让国人记住她是因为她在第一轮就淘汰了国人的希望郑钦文

[Greg Yan @GregYanBJ]

她和Iga同岁，都是波兰的少年新星，但人生道路和Iga（4个法网大满贯）天差地别，是贫穷的职业网球选手的代表。如今她已成为罗兰加洛斯决赛选手，书写了体育史上最伟大的故事之一。另一位决赛选手是17岁的Mirra ，人称小米拉。她已出道就成绩斐然，成为耀眼新星。因为她的鼻孔特别，戏称为可爱的小猪猪

[Greg Yan @GregYanBJ]

@Scientific_Bird The treatment effect is small and negligible even it is do exist. It is a slow variable for human being.

[Greg Yan @GregYanBJ]

@NTFabiano It's same true for the kids who watch more short clips

[Greg Yan @GregYanBJ]

@avidseries Natural Laws speak louder than the policies by the ideological politicians

[Greg Yan @GregYanBJ]

@post____human @MillieMarconnni @grok is it true?

[Greg Yan @GregYanBJ]

It's a great work. High and Low, Peak and Valley, Only you experience it, You become a full of Being.

[Ihtesham Ali @ihteshamali]

A Norwegian neuroscientist spent 20 years proving that the act of writing by hand changes the human brain in ways typing physically cannot, and almost nobody outside her field has read the paper.

Her name is Audrey van der Meer.

She runs a brain research lab in Trondheim, and the paper that closed the argument was published in 2024 in a journal called Frontiers in Psychology. The finding is brutal enough that it should have changed every classroom on Earth.

The experiment was simple. She recruited 36 university students and put each one in a cap with 256 sensors pressed against their scalp to record brain activity. Words flashed on a screen one at a time.

Sometimes the students wrote the word by hand on a touchscreen using a digital pen, and sometimes they typed the same word on a keyboard. Every neural response was recorded for the full five seconds the word stayed on screen.

Then her team looked at the part of the data most researchers had ignored for years, which is how different parts of the brain were communicating with each other during the task.

When the students wrote by hand, the brain lit up everywhere at once.

The regions responsible for memory, sensory integration, and the encoding of new information were all firing together in a coordinated pattern that spread across the entire cortex. The whole network was awake and connected.

When the same students typed the same word, that pattern collapsed almost completely.

Most of the brain went quiet, and the connections between regions that had been alive seconds earlier were nowhere to be found on the EEG.

Same word, same brain, same person, and two completely different neurological events.

The reason turned out to be something nobody had really paid attention to before her work. Writing by hand is not one motion but a sequence of thousands of tiny micro-movements coordinated with your eyes in real time, where each letter is a different shape that requires the brain to solve a slightly different spatial problem.

Your fingers, wrist, vision, and the parts of your brain that track position in space are all working together to produce one letter, then the next, then the next.

Typing throws all of that away. Every key on a keyboard requires the exact same finger motion regardless of which letter you are pressing, which means the brain has almost nothing to integrate and almost no problem to solve.

Van der Meer said it plainly in her interviews.

Pressing the same key with the same finger over and over does not stimulate the brain in any meaningful way, and she pointed out something that should scare every parent who handed their kid an iPad.

Children who learn to read and write on tablets often cannot tell letters like b and d apart, because they have never physically felt with their bodies what it takes to actually produce those letters on a page.

A decade before her, two researchers at Princeton ran the same fight using a completely different method and ended up at the same answer. Pam Mueller and Daniel Oppenheimer tested 327 students across three experiments, where half took notes on laptops with the internet disabled and half took notes by hand, before testing everyone on what they actually understood from the lectures they had watched.

The handwriting group won by a wide margin on every question that required real understanding rather than surface recall.

The reason was hiding in the transcripts of what the two groups had actually written down.

The laptop students typed almost word for word, capturing more total content but processing almost none of it as they went, while the handwriting students physically could not write fast enough to transcribe a lecture in real time, which forced them to listen carefully, decide what actually mattered, and put it in their own words on the page.

That single act of choosing what to keep was the learning itself, and the keyboard had quietly skipped the choosing and skipped the learning along with it.

Two studies. Two countries. Same answer.

Handwriting makes the brain work. Typing lets it coast.

Every note you have ever typed instead of written went into your brain through a thinner pipe. Every meeting, every book highlight, every idea you captured on your phone instead of on paper was processed at half depth.

You did not forget those things because your memory is bad. You forgot them because typing never woke the part of the brain that would have made them stick.

The fix is the thing your grandmother already knew.

Pick up a pen. Write the thing down. The slower road is the faster one.

[Greg Yan @GregYanBJ]

Great!

[菲菲4.0 @meimei1935]

海拔8848米。
坡度超过50度。
含氧量不足海平面30%。
一次失误的代价：死亡。
2025年9月，疯子安德烈·安吉尔在这里，选择了滑雪板，而不是绳索。
他赌上的不是纪录，而是人类在极端环境下，清醒与控制力的极限。#滑雪 #人生的意义

看得心惊肉跳！登上��穆朗玛峰第一个不用氧气，在无人飞机导航滑雪⛷️下来的第一人！向挑战极限的勇��致敬🫡👍🌹🎉

[Greg Yan @GregYanBJ]

Wow! great work!

[老多 @yuashwe]

监控记录了一个城市2200年的变迁，喜欢历史的看看挺有意思，每次年代变化都意味着一个事件的发生

[Greg Yan @GregYanBJ]

@yuashwe Great work