In this lecture we cover:

First recall the body’s immune system: harmful inputs are filtered or disabled to prevent illness.

This is compared to the internal immune system: harmful inputs are filtered or disabled to prevent anxiety.

“Our psychological [immune system] can ... see danger that’s not really there.” - R. Kegan & L. Lahey. An Everyone Culture. (p.242)

The inner immune system attacks something based on assumptions that may be false. These assumptions define our growing edges.