This social interaction between cockroaches is automatic in some sense.

If you think in terms of average individual benefit, it's better to be in groups with maximized size.

It's better, in terms of group benefits, to have a 50/50 split instead of one important, large group and one that's less robust.

The Bible is a study guide for social interaction.

Social media allows me to pick my times for social interaction.

We don't see a lot of models for male social interaction. There's sports and barn raisings.