Over the years of owning and running a high-performance automotive business, I've come to learn a few things. Many people consider mechanics to be automotive experts, doctors to be medical experts, and electricians electrical experts. When an average person asks a mechanic what is wrong with their car, they generally believe said mechanic, because he's the expert. Here's the problem- a mechanic may very well be an automotive expert, just like JJ may be a hunting expert, but even so, different mechanics can give VERY different answers to the same question! An expert bases his opinions on a lot of experience, but it's still just an opinion.