More and more people these days are building their own computers. Not only does it cost less to put together a machine yourself, but you also get to avoid the ignorant, shifty-eyed salesmen in PC World who only exist to pressure you into buying a worthless extended warranty. So why doesn't everyone build their own computer?
Because, of course, most people don't know how. There is a mystique surrounding computers - we are led to believe that they are sophisticated and complicated pieces of equipment that need to be built by trained experts using special tools such as "screwdrivers". This is simply untrue.