We all have edge cases in our deliveries, as such, we need to account for them.
But that is as far as it should go, accounting for them.
We don’t need to have all the answers, we just need to have a way to account for them.
Each edge case and exception will be different so all we need to do is know what to do when they pop up.
You can’t plan for tomorrow, but you can prepare for what might come and deal with it the same you’ll deal with every other exception when it pops up.