Last month a founder booked a call that I still haven't stopped thinking about. He arrived with 3 finished products, all polished, all built inside a single quarter and his question for us was which one he should start marketing. I asked which of the 3 problems he had validated and after a pause he said that building them had felt like the validation. He isn't careless which is the part that bugs me. If he can slide into this, anyone can. There used to be a wall between having an idea and hold...