When I first started at the adoption agency, one of the sweet older social workers would leave voicemails complaining that her mouse did not work. She was never in her office when I arrived but the mouse seemed fine upon investigation. The voicemails kept coming and I would keep missing her until one day we connected. I ran upstairs and asked her to show me what was going on. She promptly picked up the mouse, buttons to palm, and demonstrated how badly the mouse behaved.