I think this is one of the single most valuable lessons any startup can learn. Having been a founder of 3 or 4 startups, and learnt from successes and also fro

I think this is one of the single most valuable lessons any startup can learn. Having been a founder of 3 or 4 startups, and learnt from successes and also from failures, I cannot emphasise enough how important product/market fit and timing is. Incidentally - this comes from a blog post he actually wrote some time ago that's been republished.