Aliens, do they exist, etc.

I actually find the lack of aliens mentioned here to be interesting. I mean I define 'alien' in this sense as a physical species from another planet. They are material, biological. Spirits, be they once-human or something other, isn't 'alien'. 

So yeah this is super interesting. Its like yeah, we are not alone, but maybe we are the only physical biological sapients in our near region. 

This is really fascinating.