[daemonk]

This comment might not be relevant to the article.

Isn't diversity ultimately relative to the group you are comparing to? And how you want to define the group might differ among people? Also how you weigh the trait in relation to its effect on the some kind of performance metric of the group?

Someone with trait A could be considered diverse if we define a group with predominantly trait B. Does having diverse traits (a mix of both A and B) highly correlated with better performance/survival/whatever metric? Maybe having diversity means the group can adapt better over time (surviving an evolutionary bottleneck in some sense)?

Most of these concepts are obviously not quantifiable in this way, but I think we need some kind of framework to think about how we define diversity.