How about...ready...aim..release!
Do you know the story about the Island monkeys? Although the debunkers went to great lengths to try and prove it didn't happen, it's become folklore apocryphal now, which has got to be worth something and often quoted by people who claim to have been ripped off of ideas by other writers (did on every scriptwriting course I ever did, anyway!). Goes like this: on one particular Island some monkeys used to wash the potatoes (although I heard it as coconuts!) in the sea, but not others. When a transformation figure was reached, apparently ALL the monkeys started doing it. And not only, that but monkeys on other islands started doing it - a kind of universal consciousness...
At least you don't have these hazards writing SF.
The moment we have an American actor playing a Roman general on the big screen, we are asking the viewer to suspend disbelief, which they do easily.
I'm reminded of a moment in that art-house masterpiece Where Eagles Dare, when an RAF pilot is about to land a German plane full of disguised commandos, who are going to launch a surprise attack on - well, everything in sight, really. He leans over to Richard Burton and says "Righto! We're coming in to land - I'll just let German control know." Then he toggles the radio and shouts "Attention control! Ve are comink into ze landink area!"