Have you had to write a rent check lately? Or maybe fax some important documents? Despite things like Venmo and email that normal people use every day, these ancient bits of tech and culture just keep hanging on. There's clearly better technology, it's just that not everyone is using it. Here are nine outmoded technologies that just won't disappear.Fax MachineWhen they were invented: 1843Purpose: Sending copies of physical documents over phone linesWhere they're still used: Doctors' offices, lawyers, the CIA (which demands the FOI requests be faxed, rather than mailed or sent online), people in JapanWhy they're still used:...