Six months ago, someone put an older Mac Pro in the dumpster in my apartment building, but the previous owners had cut open the front of it so the case was practically ruined.
Today, there is another older Mac Pro in the dumpster and the front of the case was not cut, but someone had been there before me and harvested the memory and harddrive from it. However, instead of having used the beautifully engineered latch on the back of the case to open it, the case had been pried open with a crowbar ... which means that the case is ruined. What an idiot! Argh!