[Mark17]

Some people even get wrist problems just using the wrong kind of mouse. I think it can happen.

I have gotten some wrist pain from using a mouse, but I try not to let it get me down.

[generally]

I think it can happen, too. In particular, I think if a person’s proportions are a mismatch for a tool’s proportions, it can be a problem. What works well for one person can be horrible for another. Couple that with overuse and you’re asking for trouble.

Maybe that’s his problem or maybe he’s a whiner. I don’t know his history, whether he whines or not, so no guess from me.