Thumbtack CEO Marco Zappacosta: "We got 42 'no's' before we got a 'yes'"
Danny In The Valley
The Sunday Times tech correspondent Danny Fortson brings on Jon Callaghan, founder of True Ventures, on investing in things before there is a market (3:15), finding Fitbit (6:00), backing big ideas (9:15), celebrating failure (16:00), a drone...