The outpouring of tributes, memories and anecdotes that have streamed over social media since tech pioneer Bob Lee was stabbed to death tell of a genius engineer, a serial innovator, a loving family man, and, as his nickname Crazy Bob would suggest, someone with a sense of humour.
Friends told how Lee dropped out of St Louis University, Missouri, and through sheer brilliance at computer coding and a determination to improve the lives of others went on to develop digital tools such as Google’s Android and the Cash App that are now used by tens of millions of people each day.
