[notshift]

I agree with the legs example, but neural networks are basically a mathematical construct, and they solve problems that any other intelligent species in our universe would also have to face. I think if a better mathematical construct for solving those problems were possible, the process of natural selection probably would've found it by now.

We know that evolution has limitations in how it explores the state space; sometimes certain new developments depend upon past developments. But it seems to me that the development of a brain would hit relatively few of these barriers.