What to show and what not to show

Sanderson shows the heist-planning scene for Kelsior and his crew in Mistborn--there is literally a chalkboard and he (the character) is soliciting from each other character how they will help pull off the heist. We read about Kelsior writing down each piece of the plan. We see the columns on the chalkboard. Whole thing, piece by piece.

First time I read the book I sort of followed along with the scene, chugged through it. Second time, I thought, Aha. You are figuring out the heist in your writing, Sanderson. I see it. Heheh. Maybe, maybe not, but it fits the quote you provided, Mythmonger!