Comment It's a bit of a conceit (Score 1, Insightful) 114
It's seems a bit of a conceit to assume that intelligent life would take the same size and scale that we humans take.
Why do we assume that aliens would necessarily be in the same order of magnitude as our size? Could it be more likely that an intelligence that is much, much larger or much more microscopic than ourselves could exist?
Could it also be that intelligent life exists in a different time span than we do? I wonder if there are life forms equivalent to our California redwoods that are intelligent but we couldn't detect it because they are so long or short lived as to not have any visible change in our own lifespan.
I would think that the smartest thing that an intelligent life form would do upon discovering humans would be to make sure that they themselves are undiscoverable.