Today's Wall Street Journal included an article about Mario Polegato, the inventor of breathable shoes. The article reveals that Mr. Polegato was at a wine convention in Reno, Nevada when he decided to go for a walk. As soon as he stepped out in the desert heat his feet started to bother him because the rubber soles didn't let the heat escape from his shoes. He took out his Swiss Army knife and cut holes in the soles of the shoes bringing immediate relief. His walk in the hot Nevada desert was the start of what is now a billion dollar foot ware company.
The rest is history. Mr. Polegato, vintner and shoe aficionado created Geox and its breathable shoes. Here is a link to his list of Mr. Polegato's inventions.