3D Master, what Dr. Seth Shostak wrote ("and, actually, outright states") is not in accordance with what you said at all.
May look vaguely humanoid does not equal "are in fact all humanoid or near humanoid".
The qualifyers (bolded above) are all huge and important ones, and should not be discarded so lightly..
And before that he describes ("and, actually, outright states") his opinion that convergence to this precise bodyplan is probably not going to happen all that often and that to expect this is rather absurd.
In fact, beyond a bilateral symmetry, an even number of eyes and appendages, I wouldn't expect them to be much like us at all. We are the result of a myriad of random choices by our genes over billions of years, coupled with extinction of other, more prolific, species, several times, often by chance, which only then allowed our rise to become the dominant life form. Play those evolutionary dice out again and again and you are going to come up with different dominant life forms - not all of them humanoid.
May look vaguely humanoid does not equal "are in fact all humanoid or near humanoid".
The qualifyers (bolded above) are all huge and important ones, and should not be discarded so lightly..
And before that he describes ("and, actually, outright states") his opinion that convergence to this precise bodyplan is probably not going to happen all that often and that to expect this is rather absurd.
In fact, beyond a bilateral symmetry, an even number of eyes and appendages, I wouldn't expect them to be much like us at all. We are the result of a myriad of random choices by our genes over billions of years, coupled with extinction of other, more prolific, species, several times, often by chance, which only then allowed our rise to become the dominant life form. Play those evolutionary dice out again and again and you are going to come up with different dominant life forms - not all of them humanoid.