So as I sit here typing I have the pattern of a TO-220 FET tab burned into the tip of my right index finger, which leads me to the following theory:
The "I wonder if that's hot - I'll just touch it and see" thought process works much faster than the common sense process that makes you think "If it is hot I shouldn't be touching it."
I wouldn't be suprised if others on this group have evidence to support this theory. :-)