Actions might include some continuous checks in them, like the famous plan, do, check, act.

Solipsism already tell us that anything beyond current present self experience, existence of anything is uncertain. So, almost everything one have to take for granted to make anything outside metaphysic argument require an act of faith.

https://en.wikipedia.org/wiki/Solipsism

Conversely, a type-2 moron favors the last thing he/she heard, readily allowing it to dislodge any prior beliefs, values or intentions no matter how well-founded. Here in the US, our current president can be cited as an example of a type-2 moron.

In reality, we all fall into one or both of these categories on occasion, so it's best not to indulge in excessive self-assurance.