Nothing is Impossible (OPEN)
Being long lived doesn't mean you've seen and done it all. It just makes it more likely that you have come close. At least have seen more than most beings. The universe doesn't like to show all of its cards, especially the ones up its sleeves. Alternate realities, tributaries from the time stream and the like. It might be physically impossible for any one life form to have literally seen and done everything there is to do in the vast plane of existence. Captain Jack Harkness was no exception regardless of what his bravado might suggest, and he was getting mighty tired of the universe driving that point home.
One minute he was strolling down the broken down streets of die Festung on his way to a favorite pub, the next his world turned inside out, shunted sideways then spat him out of the tumble setting. How he hadn't come to consciousness on his ass wasn't something he was particularly concerned about. What was was where the hell was he now?
Looking around himself with a perplexed frown on his face he immediately assessed his surroundings. The buildings, cars, technology in the hands of people walking past him on the sidewalk all seemed to indicate Earth standard, late twentieth century, maybe early twenty first. From a time traveler's standpoint who didn't have a functioning vortex watch it was difficult to tell for certain. At least he assumed his watch still wasn't working. Jack flipped open the cover guard to check only to find that instead of the solid red light that indicated a full charge but a technical malfunction the read out was going haywire. Dates, times and charts were cycling randomly with no rhyme or reason. Great. It was more of a tease than before.
Jack closed the watch then let his arm fall as he looked around again. Everything looked Earth like, but he didn't recognize the city, and he knew he'd been to every city on the planet that could match this size. Which meant this could possibly be an alternate reality. One of those tributaries. If that were the case, then all he'd have to do is hang out, wait for the parking brake of the TARDIS to wheeze and whine its arrival then he could hitch a ride with the Doctor. The Time Lord didn't like tributaries in time. They tended to muck things up too much in the time vortex to the point of possibly blending with other tributaries. If that happened too often it got really messy. Meanwhile, he figure he could always wander and try to figure out where he was.
"Hopefully this isn't a probability that didn't believe in bars."