YC said his idea "would never work". So he lived in his office for months—then raised $17M from a16z in 14 days. | Marty Kausas, founder of Pylon

Marty and his co-founders lived full-time in their office for several months. They worked on their startup 24/7. To come up with the idea, they messaged 120 potential customers every day for 3 months. Originally, when they pitched YC they were told their idea would never work. YC said they'd seen it several times and it was destined to fail. So in 2 weeks Marty landed a customer and built a product-- and YC let him in. He went on to raise a $3M seed round from General Catalyst in 6 days and l...