Who invented velcro you asked ? 
The hook-and-loop fastener was invented in 1941 by Swiss engineer, George de Mestral who lived in Commugny, Switzerland. The idea came to him one day after returning from a hunting trip with his dog in the Alps. He took a close look at the burrs (seeds) of burdock that kept sticking to his clothes and his dog’s fur. He examined them under a microscope, and noted their hundreds of “hooks” that caught on anything with a loop, such as clothing, animal fur, or hair. He saw the possibility of binding two materials reversibly in a simple fashion, if he could figure out how to duplicate the hooks and loops.
Another year passed before George de Mestral finally worked out how to create the loops, which were also made with nylon, but needed to be looped and heat treated to avoid reverting to plain nylon thread again. Unfortunately this invention wasn’t sufficient since the hooks would grab, but not easily let go.
WOW that is crazy