Half a step is not half an effect

The grinder has detents, and for a long time I treated them as a linear scale. One click coarser was one click, regardless of where on the dial I was sitting.

This is clearly wrong at the fine end. Around espresso settings a single click can take a shot from choking to gushing. Three clicks coarser, in filter territory, I can barely taste at all.

I now move one click at a time below a certain point on the dial and three above it, which feels unscientific but produces fewer wasted cups.