It's been less than a week since the deadliest mass shooting in American history. And foremost in all of our minds has been the loss and the grief felt by the people of Orlando, especially our fri
But I learned what opportunity cost is. 但（通过这件事）我学会了什么是“机会成本”。 And along the way, the map of my life got better. 就这样，我人生的地图慢慢完整起来。 It got bigger; it contained more places. 版图不断扩大，地方也不断增多。 There were m
But you can imagine looking inside the brain. And here's inside the brain. 不过我们能想象大脑内部发生了什么。图上就是大脑内部。 You might have a little predictor, a neural simulator, of the physics of your body and your senses
