11/25/2025
3 Days, 9 Months, 27 Years by John Scalzi
That's the amount of time the time traveler can travel for and still manage to make it back to where/when they came from. And it's both. Time travel tourism, as sold by 'the Organization' takes the scientific or well-heeled traveler to not just another time, but another slice of the metaverse. The butterfly can flap its wings as fast as it wants - but any changes occur in someone else's timestream. They think. They believe. They seriously effing hope.
So you can change history - just not yours or the history of your own world. BUT, definitely but, you can change someone else's. Maybe, just maybe, the history of a whole entire slice of the multiverse, just enough to save it, and yourself, and humanity as a whole.
Or at least that's the theory the time travel technician of THIS time stream has been working on. For the whole 27 years he's been there. This day, the day of this story, is his last day on the job, giving him the opportunity to think about all the crazy things and people he's seen, so that he's ready, at the end of the day, to do the craziest thing he's ever done. AGAIN.
This is a short, terrific, story with a devastating twist. It will make you laugh along the way, because humans are gonna human in any stream of the multiverse. It will also make you think of every time travel story you've ever read - because they ALL fit, every last one of them. And it will leave you wondering, like all the best SF does even - or especially - when it makes you laugh along the way.