Umm, how can forget the greatest cognitive bias ever in software development: http://en.wikipedia.org/wiki/Planning_fallacy http://en.wikipedia.org/wiki/Plannin

Umm, how can forget the greatest cognitive bias ever in software development: http://en.wikipedia.org/wiki/Planning_fallacy http://en.wikipedia.org/wiki/Planning_fallacy The planning fallacy is a tendency for people and organizations to underestimate how long they will need to complete a task, even when they have experience of similar tasks over-running.