Rosabeth Moss Kanter

Tribalism reflects strong ethnic or cultural identities that separate members of one group from another, making them loyal to people like them and suspicious of outsiders, which undermines efforts to forge common cause across groups.

Software options proliferate extremely easily - too easily, in fact - because too many options create tools that can't ever be used intuitively. Intuitive actions confine the detail work to a dedicated part of the brain, leaving the rest of one's mind free to respond with attention and sensitivity to the changing texture of the moment.

I think prejudice has gotten to a point where a lot of people hold biases in their mind and don't even realize that they're doing it, because it's deeply ingrained in the fabric of what it means to be an American.