The difference between a crackpot and a visionary is their understanding of the current best knowledge. Galileo knew astronomy. Newton identified the gaps in math. Einstein understood Newtonian physics. Disruptors don’t just challenge the status quo, they know the status quo well enough to explain why its wrong.

I always like bringing up Franz Reichelt. Everyone thought he was crazy.

Same as the billionaire high school dropout. Except the one on the right would be a small leaflet.