Hofstadter's Law An Idea by Douglas Hofstadter en.wikipedia.org It always takes longer than you expect, even when you take into account Hofstadter's Law. On the "Building" of Software and WebsitesDeadlines are bullshitParkinson's Law recursionself-referenceplanningtime
Yagni A Definition by Martin Fowler martinfowler.com Yagni originally is an acronym that stands for "You Aren't Gonna Need It". It is a mantra from Extreme Programming that's often used generally in agile software teams. It's a statement that some capability we presume our software needs in the future should not be built now because "you aren't gonna need it". A late change in requirements is a competitive advantageRequirements proliferation softwareagilefeaturesplanning