What's your non-recoverable mistake? Not What are you going to do? How do you hedge against it?

Most mistakes in investment are recoverable over time.
 
Blind spot. These people simply don't understand structural uncertainty. When faced with something uncomfortable they ignore it, downplay it verbally.

Reframers. Hear something, it's uncomfortable, and they reframe it.

Active inertia (tends to be the most successful group). Say the same thing but louder rather than do something different.