Greys Are Neotenic Protohumans

Level 0 – Common Web
ALIEN

I guess this is saying that the “Grey” Aliens are an underdeveloped human. Maybe somewhere in the path of evolution humans and Greys broke apart and while we evolved in a physical sense, maybe they evolved in a mental sense. Which is why they look weak but have advanced technology. I assume they left earth in the past and come back to visit occasionally.