Most programmers fancy themselves to be rational and objective, probably more so than the general population. Recent research suggests this self image might have a basis in fact. Nonetheless, many programmers cling to coding styles and programming practices of questionable value, even when there's evidence supporting better approaches.
Comedian Stephen Colbert has popularized the word "truthiness" to describe the human trait of knowing something "from the gut" without regard to actual facts. This talk takes a lighthearted look at programmers' truthiness in the hope of inspiring more truthfulness.