> two conflicting schools Three, apparently: there are the people (such as me) who think the button should "show" what it does when you click it. It shouldn't

> two conflicting schools Three, apparently: there are the people (such as me) who think the button should "show" what it does when you click it. It shouldn't indicate anything else (except it's enabled/disabled state, i.e. whether you are allowed to click it). Button text should be constant. If you need an indicator, that should be another widget.