Three companies raised millions and solved real problems, but still shut down. After 200+ investments, here's why startups actually fail - and why it has nothing to do with founder talent.

The old VC playbook said concentrate your bets. But investor competition changed everything. Here's why diversification is now your best shot at 10,000x returns.

Co-investing with a16z or Sequoia in seed rounds won't predict success. But in late-stage rounds? The data tells a different story. Here's when VC signal actually matters.