15,000 years ago, on an island that would be blown into space by a volcanic eruption in just over 10,000 years, 2 time travelling citizens of a futuristic society fell into conversation.
"What do you think of the new restaurant down by the pier?"
"Lovely view, if only those primitive humans didn't keep getting so close in their reed boats,"
"Reed boats you say? Did they have that technology last time it was this time?"
"I hear Spraggleblat down in the tool shop has been slipping them hints during his off-the-rez trips."
"Unbelievable! Have you got any proof?"
"Well, not now, but 14,000 years from now there's currently a world government run by Canadians."
"Whoa-ho! Cerainly a few full deviations from the main!"
"And the world anthem is sung two ways, one way takes 3 days and is in 77 languages and the other takes 'only' 90 minutes and uses all 77 languages in an artificially generated grammatical matrix."
"The horror, somebody has to talk to Spraggleblat!"
"Or our ancestors will be eating back bacon and pancakes forever."