I mean, making simulations of what you're going to build is tremendously useful if you can get feedback from them that will tell you where you've gone wrong and what you can do about it.
“It's a lucky child that knows that they're a genius, unaimed and all that.”
“If the President says, oh, Washington's got to change, and people are doubting whether my change can really happen, I think instead what the public's begun to see is the change they're seeing is not the change they voted for.”