Yeah, but imagine how horrific for the person who caused an altered timeline that didn't play out as they expected? Being the time traveler who caused it, I su

Yeah, but imagine how horrific for the person who caused an altered timeline that didn't play out as they expected? Being the time traveler who caused it, I suspect they'd remember what they'd done and what they expected of the "future" they're "returning" (or traveling?) to. Imagine you've stepped into Rod Serling's Twilight Zone and got the "twist" ending to your time travel story... ;)