Time traveling? Don't forget to pack this T-shirt In last week's Lost, just as Juliet and Sawyer were boarding the submarine back to the real world in 1977, Sawyer told her to "buy Microsoft." Imagine all the things you could change if you suddenly found yourself thrust back in time: You could destroy the planets of your enemies, like Star Trek's Nero, or kill the mother of your future nemesis (or at least try), like the T-800.