Mechanism and Pseudoscience

Growing up with and around hippies, I was exposed to a lot of pseudoscience, so I had to develop a set of metrics to differentiate between science and pseudoscience. Many of them had to do with considering the reliability of the source, (if I heard this from some guy named Moonbeam at a Rainbow Gathering who can barely stand up straight: Probably not too reliable), but a few are more useful, and have stuck with me over the years. The main one has to do with mechanism.