genes' blue jeans?

another little-noted "anthropological" fact in the daily world -- including in Moscow -- that can be a free, insightful lesson about the human being...jeans. blue jeans.
started in California in the mid-1800s, they are now worn globally.
sit in any Moscow metro wagon anytime and observe how many -- and sometimes who -- are wearing blue jeans. (new, faded, stylishly "pre-worn", etc) often at least half the wagon will be in blue jeans.
comfortable perhaps, but more than that.
this fact -- again, little noted these mundane days -- shows group mentality. group taste. a desire to "fit in", to be a part of fashion. and being a world-wide phenomena, it seems a rather good external indication of "inner blue jeans" in ideas, desires, likes, dislikes, tastes etc.
ie conformism.
it's probably in the genes.