The studies that do exist juggle numbers and play with statistics to the point where the information becomes meaningless.

I juggled numbers in my head, working from the figures in the books he'd set aside in the Archives.

I juggled numbers in my head and counted a talent and six jots onto the glass top of the display case.

I juggled numbers in my head and wondered how long it would take to create an arrowcatch using only the equipment in Caudicus' tower.