"So don’t search your character sheet or the rules for the perfect solution [...]"
It was like having a deja-vu. When you look over the DM screen and see your players going back and forth their character sheets (or rulebooks) trying to find the answer for any given situation, you should know that something is wrong. It's then time to stop and ask:
People, is this really the game we want to play? Are we having fun?
Later in the booklet, on the same section, there's a summary in reference to A Quick Primer for Old School Gaming by Matthew J. Finch, and under the item "Player Skill, not Character Skill " you can read the following:
And I would humbly add, neither do DMs. Amen.