I was, er, sitting down in the bathroom with my MacBook Pro perched on the edge of the bath so I could read from it. I've done this a thousand times. Yesterday, however, gravity decided to punish me and the MacBook fell backwards into the empty bath. The lid has a couple of scuffs and a small dent. The damage appears to be wholly cosmetic. I even ran Apple Hardware Test and it came back A-OK. Is it likely that there is no other damage, lurking inside? Are these things pretty solid internally?