There is a direct proportion between two values when one is a multiple of the other. For example, \(1\text{cm} = 10\text{mm}.\) To convert \(\text{cm}\) to \(\text{mm}\), the multiplier is always 10.

With the Sundance Film Festival right around the corner, I thought it would be appropriate to re-publish a little post I wrote some time ago in the waning days of the 2008 fest. Originally published ...