Once things are built, there's no sense that we better get something fixed if it goes wrong. As an example (or two), I was using the computer network in a school for a demonstration. I arrived a few minutes early to get my stuff together, get set up and generaly get sorted. It turned out that some of the fuses weren't working and we couldn't turn all the lights (or computers or a combination of the 2) on at the same time.
Now fair enough. This stuff happens. Nothing's perfect, but this guy I work with said he'd know about it for a while. Now don't get me wrong, I don't expect stuff to be fixed immediately, but how can a serior guy, and articulate, organised, disciplined guy let that happen? When is it ever a good idea to have $7500 worth of computers (at least) sitting idle? Or allow kids to work in the dark because we can't be bothered to get an electrician in?