The concept of robot overlords taking control of mankind dates back long before Will Smith's 2004 magnum opus I, ROBOT, which is, incidentally, now the name of one of those automatic floor vacuums. In fact, stories of computers ruling humanity date back as early as the 1950s (as commenters who know their Asimov will no doubt point out). But these days, it really isn't science fiction. In fact, Wired reported a study by Oxford University researchers that estimated 47 percent of current jobs in the U.S. could very well be automated inside of the next 20 to 30 years. The scary part is that Americans actually agree for the most part with these findings — they're just in denial that they are the ones on the chopping block.