人脑只需 20 瓦，为什么计算机做不到同样的事？

以下是视频口播的自动转写，可能有错字。

Your brain runs on 20 watts. Those 20 watts run 86 billion neurons wired together by roughly 100 trillion connections. Back in 2013, japan's k computer tried to simulate about 1% of that network.

One second of brain activity took 40 minutes, pulling around 10 megawatts, half a million times your brain's budget, and the wiring in the simulation was really random.

It copied the scale, but not necessarily the thinking. So today's fastest supercomputers still draw over 20 megawatts. Training one large ai model can burn through more than 1,000 megawatt hours, which is about 120 homes use in a year.

So what's your brain doing that silicon? Isn't the first thing is a computer keeps memory in one place and does the math in another and shuttling data between them cost more energy than you would probably realize.

Whereas in your brain, the connection is the memory. Nothing has to commute. The second is simpler neurons sit silent until they fire.

It's essentially a city that only lights the room. Someone standing in now, your brain is genuinely terrible at computer things.

Think about it. I mean, long division, it's terrible at that. It loses names mid-sentence and everything you consciously do squeezes through at about 10 bits per second.

A 10 dollar calculator beats you at math every time. I mean, the average person but moving seeing understanding a room. Nothing we've built comes within 10 million times of the brain's power bill, which is why chip designers stopped trying to outbuild your brain and started to try and copy it.

I'm curious to see how this evolves if they'll be able to do so. probably probably.