Yeah. I still remember learning that when I was in high school and being confused at how there was just so little left of someone I was at the same time being told was so famous and prolific. I think that was one of the formative steps to realizing just how fragmentary even the most famous bits of history really are, because before that point everything I'd seen about antiquity was always presented with a sort of air of completeness and I never realized how often that vague summaries of a place or person or practice genuinely were the sum total of what's actually known about them.