This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
It is hard to tell in advance what is important. Quite a few innovations that were promised to change everything turned out to have much more limited value.
I don't see any reason for it. So far, all knowledge in this area is just correlation between some genes and IQ, with no understanding how it works. Judging from history of other technologies, with such theoretical base any major improvements take centuries of trial and error.