After 30 years, dozens of startups and several IPOs... I'm here to say that the combination of energy and tenacity is an amazing predictor of success. I read t

After 30 years, dozens of startups and several IPOs... I'm here to say that the combination of energy and tenacity is an amazing predictor of success. I read this more as "in defensive of high energy people" which then attracts the sort of vitriol you see in the comments section here, e.g. accusations of sloppiness, short attention spans, etc. Obviously, quality is required to the extent customers judge products in that category. Tesla had/has astoundingly poor quality, and Henry Ford is famous for optimizing-down quality as well.