I tried to clarify a potential ambiguity and ended up making an ambiguous post myself - I should've been more careful :-)

When I read steven0461's post I thought he was asking whpearson if the overall winteriness/summeriness of people literally changed from season to season as time passed, and I replied with that in mind. Although whpearson's post does associate literal climates with the personality clusters he suggests, I didn't think he was meaning to imply that people's personalities undergo a seasonal winter-summer cycle, which is the point I meant to make.

But I think you and Airedale are right that whpearson meant to draw other literal connections between seasons and personality clusters - just not one about seasonal cycles - and I could've been clearer on that.