How to Invent Life on Earth

Thekyou start off by saying, ok, the you know, what is it like? The vast majority of your d and a is instructions on how yourselvs do stuff. And so flight is so useful that it's evolved at many times. Also, like a on earthanyway, vision has evolved independently many times. It's just real handy to know wherehe, where the photons are. He goes into some really exquisite detail on how the how in astrophage could work internally.