Adam Neumann on first principles for founders: ask why until nobody can answer, then ask again. "It's our second WeWork building. We need to do the floor. We only had ninety thousand dollars." "I said, 'How much is the floor?' Everybody's like, 'The floor is between thirty to forty-five thousand.' I said, 'Why?' They said, 'What do you mean why? These are the quotes.'" "I said, 'Can you break down the quotes for me? How many pieces of floor? How many nails? How much glue? How many hours of…