It is also odd to see such a weak argument as the brain-to-body mass ratio being used, as here: https://youtu.be/YD-9NG1Ke5Y?t=593 https://youtu.be/YD-9NG1Ke5Y?

It is also odd to see such a weak argument as the brain-to-body mass ratio being used, as here: https://youtu.be/YD-9NG1Ke5Y?t=593 https://youtu.be/YD-9NG1Ke5Y?t=593 If this metric were truly indicative, what should we make of the remarkable ratios found in small birds (1:12), tree shrews (1:10), or even small ants (1:7)? https://en.wikipedia.org/wiki/Brain%E2%80%93body_mass_ratio https://en.wikipedia.org/wiki/Brain%E2%80%93body_mass_ratio