This is a well-known aphorism in software development and not at all specific to the Web platform: <https://en.wikipedia.org/wiki/Ninety%E2%80%93ninety_rule ht

This is a well-known aphorism in software development and not at all specific to the Web platform: <https://en.wikipedia.org/wiki/Ninety%E2%80%93ninety_rule https://en.wikipedia.org/wiki/Ninety%E2%80%93ninety_rule>