Apparently it does matter. The only fact and truth about professional experience is that you have claimed professional experience in the blogosphere. Claiming a higher failure rate, without empirical data is not a truth. Bias is still an unsubstantiated opinion, regardless of the profession. Holding the same opinion for any length of time does not validate that opinion.

I know a lot of mechanics, with a lot more than 8 years of experience, all with their own biases. "Fords suck, I'm a Chevy man! I know, from experience that fords break down more often. It's the truth" is one arbitrary example.

All I'm trying to do is inject some logic into your statements.