This is the key: Feldman also believes strongly that projects stay on track when developers bite off software requirements into as small pieces as possible. C

This is the key: Feldman also believes strongly that projects stay on track when developers bite off software requirements into as small pieces as possible. Continuous deployment (for example) surfaces miscommunications pretty quickly, so you don't go too far down the wrong path. (It doesn't help with estimating completion dates, though.) I just wish feature flags were sightly less annoying to manage.