Xkcd bot dating Chat sex date line free phoenix arizona
They have the same secondary sex traits - as species-specific as you can get.
Only their males have much facial hair, and their females often have bodacious figures. This leads to some speculation that they may be of Earth Human descent.
Convergent evolution might well produce a generally humanoid body plan, just as sharks and dolphins have a similar overall configuration.
But Aliens with Forehead Ridges have much more than a general similarity to Earth Humans.
Or what if a drop of water were trickling down the trunk of the tree?
In written SF, the KNOWN GALAXY seems increasingly to be inhabited only by Earth Humans.Yet what if the caterpillar were crawling over the trunk of a tree?The trunk isn't moving, yet it is as alive as the caterpillar.Exosemanticists have their work cut out understanding them, and exopsychologists in figuring out what they're all about.Relations between humans and Really Aliens are necessarily limited, since we have so little in common with them.
It would be expecting much of anyone to guess that an oyster were alive if he came across one (for the first time) with a closed shell.