citybythesea
Striker
I missed out, after number 2, to factor in that to still exist they must have been able to live relatively peacefully and not destroy each other and the rest of life on the planet. Something we are not successful at. Compare our stint on the planet, that is fast approaching its end, and compare the amount of time we existed to that of the dinosaurs or insects. Intelligent life perhaps isn't capable of surviving that long. Too clever for its own good if humans are anything to go by. Point being, perhaps the window of opportunity for intelligent life to develop space craft capable of inter-stella travel is critically limited.
The far more likely explanation is that it is something familiar but their brain has interpreted it to be something different, for various reasons.
I would caution using mankind as a blueprint for other potential races, especially in the quest to destroy ourselves . Maybe other civilisations don’t share our violent nature. Who knows, but we cannot be the yardstick to judge everything else upon