I think that is a given: Once you've done something, you intrinsically know how to do it. More interestingly, to what degree does our knowledge play on our abi

I think that is a given: Once you've done something, you intrinsically know how to do it. More interestingly, to what degree does our knowledge play on our ability to see new ideas? Do our brains ignore the seemingly impossible because it seems impossible? Could someone have imagined Facebook before computers and the internet were invented, for example? Do the ideas come first, and then one set out to figure out how to make it work, like as it appears to happen in science fiction? Or are those ideas already based on working knowledge of what is reasonably possible with not-so-far-off technology?