From the Sunday Times:
DESMOND MORRIS, who became a bestselling author by applying zoology to explain human behaviour, has now utilised the techniques to put forward an explanation for homosexuality.
According to this theory, gay men also tend to be more inventive and creative than heterosexuals because they are more likely to retain the mental agility and playfulness of childhood.
“Gays have in general made a disproportionately greater contribution to life than nongays,” said Morris, who is also a noted artist. “The creative gay has very much advanced Planet Earth.”
“The playfulness of childhood is continued with certain people into adulthood. This is very much a positive. Adult playfulness means that certain people, often a fairly large proportion of them gay, are more inventive and curious than heterosexuals.”
Nature, nurture, neoteny. Mix and match, take your pick.