Re: Stephen Jay Gould and Progress

Robin Hanson (
Wed, 8 Jan 1997 14:58:41 -0800 (PST) writes:
>I'm not sure about there being no "complexification drive". Brain sizes have
>increased markedly over time, and land animals with the intelligence of most
>dinosaurs probably wouldn't be viable today. Certainly there aren't any.

Maximum brain size has been increasing, just as maximum body size has
been increasing. But I don't think there is any more evidence for a
local tendency in brains than there is in bodies.

Robin D. Hanson