or some kind of evolutionary shift. I like the names.
I found this story interesting, at least partly because of the names chosen for the groups.
It seems that in Japan there are large numbers of 'Herbivores', hetero men who are adopting more passive lifestyles. The newly aggressive, empowered women are sometimes called 'carnivores'. Odd names for lifestyle choices.
Away from the strutting are the retiring wallflowers, a quiet army of sweet young men with floppy hair and skinny jeans. These young men are becoming known as Japan's "herbivores" ? from the Japanese phrase for "grass-eating boys" ? guys who are heterosexual but who say they aren't really interested in matters of the flesh.