I make good calls in the moment, but I never write down why. Months later someone asks how we landed on something and I've got nothing, just a vague memory. I stand there in the meeting looking like I made it up, when really I just never captured the reasons.
More people experience this than they realize.
You make solid decisions but don't record why, so you can't defend them later.
If this sounds familiar, the Library can help you find the bigger picture.