When someone asks you if you believe in aliens or not, I think the more proper question would be, “Do you believe in dimensions?”
Fermi’s Paradox is about if this universe is so gigantic, then where is everyone? One of the many hypotheticals is that us Earth humans just haven’t been around long enough compared to the age of the universe and the distances of spaces travel.
This makes me think of life spans of certain species here on Earth. For instance, a gnat. Gnats live for like 5 days or something. If you break up those 5 days, then they are full adult by age 2.5 days. And if they live in some random swamp, they might be having conversations about rumors they heard about the existence of humans. See where I am going with this?
I am saying if you are a one dimensional being, a dot, not even on a piece of paper because you would be 2 dimensional at that point. So your a dot. How would you even begin to describe or recognize a 3d being?
The truth is we live in a multi dimensional universe and if you don’t believe me then just ask quantum science. Just because we don’t understand something, doesn’t mean it doesn’t exist. Secondly, the universe is under no obligation to make sense. Thirdly, if words and cartoons can live in 2d and we can live in 3d and 4d (time), why can’t there exist beings in 5d, 6d, 7d and beyond?
I think there is still a lot to unfold. At this point we can only perceive 1% of the electromagnetic spectrum and only account for 4% of matter of known universe. That means 96% is well, we don’t know what it is.