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It is a big Universe out there. Someday we might encounter an intelligent alien species that looks very human-like, despite very different origins (for a well-known fictional example, see Superman's homeworld of Krypton). Such a thing is very possible, thanks to a known phenomenon called "convergent evolution". On Earth, quite a few species of marsupials in Australia look quite similar to various placental-mammals (dingoes and dogs, for example). The thing I want to point out here is that while superficially similar, two such species can still be very different genetically, with no chance of yielding offspring, should they happen to sexually interact.
We have evidence that no matter how ugly Neanderthals might have appeared to be, when viewed by Homo Sapiens, that didn't stop Homo Sapiens from both sexually interacting and interbreeding with Neanderthals. We can be quite sure that should we someday meet highly humanoid aliens, sexual interactions will take place. But as mentioned above, due to different genetics, we cannot expect any offspring to result.
Relevant to this Forum is the fact that for quite a few centuries, various Churches on Earth have severely frowned-upon any sort of sexual activity that could not yield offspring. I would not be a bit surprised if they idiotically denounced human/alien sexual interactions, simply because offspring could not result, no matter how human the appearance (or the humane-ness, or the intelligence) of those aliens. The purpose of this Thread is to discuss that aspect of religious idiocy. Have fun!
We have evidence that no matter how ugly Neanderthals might have appeared to be, when viewed by Homo Sapiens, that didn't stop Homo Sapiens from both sexually interacting and interbreeding with Neanderthals. We can be quite sure that should we someday meet highly humanoid aliens, sexual interactions will take place. But as mentioned above, due to different genetics, we cannot expect any offspring to result.
Relevant to this Forum is the fact that for quite a few centuries, various Churches on Earth have severely frowned-upon any sort of sexual activity that could not yield offspring. I would not be a bit surprised if they idiotically denounced human/alien sexual interactions, simply because offspring could not result, no matter how human the appearance (or the humane-ness, or the intelligence) of those aliens. The purpose of this Thread is to discuss that aspect of religious idiocy. Have fun!