Q: I have gone to train shows and garage sales and bought many N scale cars with all sorts of different couplers. I am trying to create my own standard and stick with the majority of people with N ...

Martin Mignot, the first investor in Deliveroo, became a millionaire before turning 30. Now, as a partner at Index Ventures—the firm behind early bets on Figma, Scale AI, and Revolut—he exclusively ...