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Dude, we are just barely at the point of being able to use oxidation of fuel to create enough thrust to escape our gravity. We’re still 100% stuck...

In the year 1800 humanity which had spread across the world had wooden sailing ships, horse drawn carriages, experimentation with crude hot air...

Yeah.. you think a species who can travel 40 light years and survive it to attack us would be stunned by gunpowder weaponry.