Remember my dad trying to cut corners painting our old porch railing. He used a tiny foam roller, swore it was the same. Dried with this weird, almost plastic-y skin that showed every little seam. Had to redo the whole thing with a brush anyway. Sometimes the fast way just makes more work, you know?

But what if the skill is in knowing exactly when to stop? Some tasks just have a point of diminishing returns, and hitting it is its own kind of expertise.

Peanut butter consistency" is a wild thing to read in a DIY guide. I can't imagine spreading that on a wall without making a huge mess. It sounds like a recipe for clogged tools and sore arms to me.