The fact that humans exist proves no such thing and don't ever let anyone tell you THAT. The government can't stop 9/11, how are they going to prevent people from knowing about hyper intelligent (well at least magically powerful) aliens?
Let's say you're proto-L. Ron Hubbard from the Marcab planet. You're a racecar driver, things are going great. Bang. You get recruited into Super Crush All Known Physics Astronaut Troope. You're commander, Xenu (ok I'm playing loose with Scientology fiction), decides "Hey, we rock and can travel at (speed of light)^1000000000 in our massless spaceships (not DC-10s, for those playing at home), so why don't we travel Earth (can't spell the Tegeeak word), and camoflauge as either several little balls of light, or 1950s inspired discs and just fly around at Subsonic speeds in Earth's atmosphere and just invite wide speculation as to what we are and maybe let the little creature's weird "government system" scurry around to hide all the evidence that we exist to the other the little creatures."
Does this even make sense? If you were proto-L. Ron Hubbard, wouldn't you say "Hey Xenu, we're the freaking masters of the universe, we can fold all of space time into our cool PDAs and play mega awesome Minecraft like games with, why would we do something stupid like that?"
Trying to make sense of why or why not an advanced species that has mastered space and time, would want to do something so pointless as visiting planet earth, is the weakest argument one can make against this. Just because you cannot understand their motives, and it sound implausible, hence it cannot be true, is like a caveman trying to understand why modern humans stare at flat luminicent screens while tapping and clicking away randomly in front of it for hours.
No, totally incorrect. It's not the visitation that is pointless. It's the lack of any "actual" visitation. But it's worse than that. It's like "open secret" visitation. You can play your "One cannot divine the mind of God" game all you want but your argument is still ridiculous. No one said coming to Earth in itself is ridiculous, but it's this whole other game you want to play with it that is just too much.
Let's say you're proto-L. Ron Hubbard from the Marcab planet. You're a racecar driver, things are going great. Bang. You get recruited into Super Crush All Known Physics Astronaut Troope. You're commander, Xenu (ok I'm playing loose with Scientology fiction), decides "Hey, we rock and can travel at (speed of light)^1000000000 in our massless spaceships (not DC-10s, for those playing at home), so why don't we travel Earth (can't spell the Tegeeak word), and camoflauge as either several little balls of light, or 1950s inspired discs and just fly around at Subsonic speeds in Earth's atmosphere and just invite wide speculation as to what we are and maybe let the little creature's weird "government system" scurry around to hide all the evidence that we exist to the other the little creatures."
Does this even make sense? If you were proto-L. Ron Hubbard, wouldn't you say "Hey Xenu, we're the freaking masters of the universe, we can fold all of space time into our cool PDAs and play mega awesome Minecraft like games with, why would we do something stupid like that?"