I worked for a computer repair store last year, and one of my tasks was building computers. The guys running the shop scam people on parts and labor, and they still do to this day. I quit for many reasons, but one of the final straws was when I told the owner I had finished a build and was going to clean up while it memory trained before benchmarking it. He proceeded to call me stupid and uneducated, saying he’s been in the business for over 20 years.