/lit/ - Literature

I started reading this Didot's edition of Diogenes Laertios and I wonder if there's a specific reason for the translation of τὸ ποιοῦν with "effectio" here, although the context in the next phrase makes the "active" nature of the Greek participle ποιοῦν clear. Maybe something to do with standard Latin philosophical lexicon? I know next to nothing about philosophical terminology