I used to be a Sun field engineer. I had a foldable static mat with wrist straps in the pockets. It literally took me less than 30 seconds to unfold the mat,

I used to be a Sun field engineer. I had a foldable static mat with wrist straps in the pockets. It literally took me less than 30 seconds to unfold the mat, slide on the strap, and throw whatever system board I was repairing on the mat. The mat was padded as well, so I didn't have to worry about finding a safe surface to drop a 10 pound system board on. The reason why the Dell techs are not using wrist straps is because they are lazy, and they know that even if ESD causes a component failure, some other poor tech will get the follow up service call and just come replace another part, or replace the same part again. Have you ever wondered why a lot of replacement parts, after being installed without ESD protection, somehow are DOA (dead on arrival)? The factory that manufactures them surely tests them before shipping. Are you seriously arguing that static charges of several thousand volts can't damage integrated circuits?