We know what it's supposed to do. We don't know what it's actually doing - and neither do the people who built it, not with any certainty. This is a relatively

We know what it's supposed to do. We don't know what it's actually doing - and neither do the people who built it, not with any certainty. This is a relatively ill-understood discipline and a very fragile machine. 'Take it apart and look inside' won't tell you much about what happens when you turn it on. In that regard it might as well have been built by aliens. (Okay, it's probably not quite that bad.)