This requisite asks whether you can read a sentence that throws in algebra or a mathematical concept, without slowing down too much. For instance, a sentence remarking that in the limit of flipping N coins each with a 1/N probability of coming up heads, the chance of never getting heads is 1/*e*. If that *kind* of sentence is one you can read, you should mark yourself as understanding this requisite, so you will automatically be shown Arbital pages and tabs that invoke math of that level.