Diversity as a great good is a typically neoliberal idea. The principle behind it is that more goods on display are better than fewer goods.
This is precisely why institutional enforcement of diversity is is so strictly numerical. Forty-five kinds of pasta in a store is better than one. It’s simple numbers.
It’s also why nobody ever tries to make an argument for why “diversity is our strength.” Every consumer understands without needing an argument why it’s good to have many brands of pasta available for purchase.
I know somebody who treats her circle of acquaintances on this basis. “All that’s missing is somebody Asian!” she once shared, looking at the guests at her birthday party. “Hey, can you introduce me to that Chinese woman teaching at your department?”
The party was very uncomfortable because the guests didn’t know each other and barely knew the hostess. But we would make a great display at a store selling diversity.