@futurebird
Using brain mass, the glial cell ratio, the average number of neurons/kg, and similar measures has always sounded to me like a strong collective confirmation bias, under which whatever metric is used must satisfy these preconceived assumptions: Einstein > humans > monkeys > dogs > cats > rats > chickens > insects > plants.

This says a lot about how intelligence is perceived: a linear, vertical hierarchy of individuals used to enforce domination over people and other living beings.