Some kind of cursed object might make them time-travel, but it would also take them right out of the "normal except for monsters" world Kripke has shown us so far.
And although I love to read time travel books, they generally make my head hurt...because going back in time and interacting with significant people in your life would HAVE to change your present, but those consequences are rarely shown. I can't imagine this show doing anything but hitting the reset button, no matter what happens.
(And if someone--even someone who looked like Sam Winchester--told me not to do something twenty years in the future? I'd think they were nuts and forget about the date within a month.)
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And although I love to read time travel books, they generally make my head hurt...because going back in time and interacting with significant people in your life would HAVE to change your present, but those consequences are rarely shown. I can't imagine this show doing anything but hitting the reset button, no matter what happens.
(And if someone--even someone who looked like Sam Winchester--told me not to do something twenty years in the future? I'd think they were nuts and forget about the date within a month.)