Is an alien invasion more probable than a zombie apocalypse and or destruction by artificial intelligence? I think so. What do you think? We do not know if extraterrestrials exist. But, the cosmos is so big that it is better to be safe than sorry. Zombies are less likely to exist than aliens because, as far as the scientific community knows, the dead cannot move or act. Once a human dies that individual simply disintegrates in bodily form but may have an afterlife in the spiritual. Artificial intelligence will never gain their own consciousness. Legal disputes may arise over ai, but ai simply will not be able to perform the same tasks as humans that are needed to take over a planet.