"The importance of stupidity in scientific research." That's the title of a 1,000-word essay a UVA microbiology professor named Martin Schwartz published in 2008. Seventeen years later, it's quietly become required reading for every founder, PM, and AI researcher who's hit a wall. Schwartz wrote it because an old friend told him she dropped out of biology grad school because it made her feel stupid every day. She went to Harvard Law and became a senior environmental lawyer. She thrived. He…