2026-10-06
100 Product Managers Who Changed the World · #22: Jack Dorsey
On March 21, 2006, Jack Dorsey posted the first tweet: just setting up my twttr. Three years later a friend lost a $2,000 sale of glass faucets because he could not take a credit card, and the two of them built the Square reader that plugged into a headphone jack. One person built two products from nothing, and both are still around. #22 of 100 Product Managers Who Changed the World, scores 92/90/90/88/94/94.
