Understanding image analysis is very important. Otherwise, you cannot tell fact from fiction. Equally important is the need to understand how not to do image analysis. Otherwise charlatans may try to pull a fast one over you. In my previous blog entry, "Bad Science: How Not To Do Image Analysis", I debunked the work of an anonymous troll who called himself "TechDude". TechDude used a sample biased, false data, and artifacts created by his own tools to conclude that the Obama certificate of live birth (COLB) was fake. TechDude also used false credentials (he impersonated another person) in order to...