Sometimes when you come up with an idea, you just have to throw it at the wall and see if it sticks, even if that idea is on fire and might burn your house down. No matter what, you just have to see it through to its natural, inevitable conclusion.
These folks weren't afraid to bring their ideas to reality. Maybe they should have been, but no, they went ahead without heed to questions like "why?" or "what if someone gets hurt?"