There's definitely a dynamic with x% of the population distancing always, x% of the population not social distancing always, and then a certain percent that are

There's definitely a dynamic with x% of the population distancing always, x% of the population not social distancing always, and then a certain percent that are oscillating between getting afraid and then feeling safe again - and that's what is keeping the replication rate around 1. You can get insights into behavior with rt.live