How much of our body is reptilian versus mammalian? We have found out through science that we, as humans have gills in our embryonic stage that eventually disappear as we grow in the womb. We've also found out that we have a reptilian portion of our brain and mammalian portion of our brain that allows us to accomplish different feats. How does this play out with our current understanding of psychology? And aliens! Dive in!! Hosted on Acast. See acast.com/privacy for more information.