Plausibility of the Aquatic Ape Theory of Human Evolution is one reason I started studying the effects of omega-3s. Novelist Elizabeth Bear doesn’t like it:
[Doris] Lessing appears to have drawn her background from Elaine Morgan’s notorious pseudoscientific tome, The Descent of Woman (1972), which argues that human evolution was shaped by a seal-like return to the sea. Crackpot theories can make for great fiction but in this case . . .
That I found beneficial effects of omega-3s many times supports the “crackpot” theory.
Please see my views on aquatic ape.