if you believe aliens exist, give me LOGICAL reasons why?

Answer 1

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Answer 2

First of all, I want to say to people posting your answers, that this shouldn't be a forum to speculate and draw meaningless or irrelevant conclusions.

Whoever made a post about the brain surgeon and astronaut, give me a break. That doesn't even apply. A brain surgeon having not seen a thought, but knowing it exists is completely different to an astronaut never seeing aliens, but knowing they exist. Brain surgeons don't have a gut feeling about thoughts, so they know they exist because they "just have to exist." Brain surgeons, or anyone for that matter, know thoughts exist because they see the effects of people's thoughts. An astronaut, or any scientist, must see some evidence in order to expect alien existence. Evidence can also be in the form of statistical hypotheses.

The post about life existing in the form of chickens and reptiles is noteworthy. To expect life in space to exist and be intellectually at par with us is improbable (that doesn't mean more intelligent life exists). I believe it is very probable for life to exist in other parts of the enormously huge universe. Formation of complex life is not easy, and it might be hard to find in space; however, simple cells and microscopic organisms could exists with greater ease.

Answer 3

So far we've seen no verifiable evidence of other sentient species. That said, I believe with some certainty that somewhere in our galaxy at some past, present, or future time, a sentient species did/does/will exist.

Why haven't we heard from them?

Perhaps they are not technologically advanced enough to be heard. They may be mastering stone knives right now, or experiencing their own Rennaisance.

Perhaps they are here right now. Any species sufficiently advanced to travel interstellar distances would be able to hide or masquerade with ease. That Boeing 737 that just flew by may be a surveillance craft.

Perhaps they are so far away they will never notice us and vice versa.

Perhaps they existed a million years ago and died out.

Perhaps they will exist a million years from now.

It is really impossible to know for sure.

The Drake Equation suggests that there is sentient life out there. The Fermi Paradox casts doubt. Play around with the calculation form at the second link and see what you think.

Answer 4

If we can exist, a dog can exist, a bird or any animal or insect on this planet, who's to say there isn't life on other planets it only seems logical that on a planet like ours there would be lifeforms maybe not like us but alien never the less. We are not specially selected to only exist in this universe out of the millions of stars out there there has to be more maybe not as technologically advanced as us but they would be aliens to us even if it was a chicken/reptile on another planet that we found...

Answer 5

Two russian scientists got together, one was an astronaut and didn't believe in aliens, the other was a brain surgeon and did; the astronaut said, i've been into space many times and never seen a sign of alien life, the surgeon said, well, i've operated on thousands of brains, and never seen a single thought.
You see, we know that thoughts exist, even though we will never see them, why not aliens?

Answer 6

because we exist and that's not logical.
We are only a young civilization too, give us a couple more thousand years and imagine our technology then(provided we don't wipe ourselves out)

There are billions of planets out there and some would be similar to ours.
So life could be sustained in the same way as our planet. It is also possible for life to exist on planets unlike ours, we just don't understand how yet.

Answer 7

How can we be sure? No one has explored the universe deep enough to have bases for the existance or non-existance of aliens.

Answer 8

Because even if one star out of a quadrillion stars had a planet where life evolved, there would be over a million of those, because there are so many stars in the universe (10^20??!)

Answer 9

I can't prove or disprove but knowing that our sun is a star and there are millions of other stars that we can see, I would have to assume that many of them have planets surrounding them as well. Assuming that there are then billions of other planets up there I think we would be naive to think that there was no life on any of them. There very well may be a planet with people like us on it. Their history and decissions will make them seem different.

Answer 10

Statistically speaking with the billions and billions of stars in the universe i would think that it was almost impossible that the earth was the only place in the universe where the conditions for life were favorable.

Answer 11

I agree with Carl Sagan's classic line of reasoning, meself.