Okay -- let's take another viewpoint on this. Let's say the "owner" of that chair has severe back and/or knee problems. Let's say that after being off a day or a few days, she/he comes back to find the chair missing. When it's found at another desk, he/she tries to sit in it and someone has changed the configuration on it....moved it up or down or tilted it every which way. It takes time to get them back to the "perfect" fit. Yeah -- I feel for the owner of the chair!!! I had back and knee problems and it irritated the hell out of me that I'd be gone and return to the chair being changed....sometimes by someone that only used it for a few minutes. Would I put a chain lock on it.....NO....that's going to far. Just saying ----- there's 2 sides to every story, so don't put the "owner" down too hard.