I mean, isn't the goal of trivia as a game having random knowledge that can be used? Besides, your qualifications for tf2 and simple math don't really solve anything. There are tons of obscure quirks in tf2s game design and weird facts in the comics that are nearly impossible to find unless you read them. I mean, you can reference one comic panel is a random comic as your question, if you really wanted, and that would be harder than a random one about Troy (good idea, btw), as it is way harder to google.
As far as math goes, simple math varies greatly depending on the expirience of the warden. For example, as an engineering student, I am well versed in calculus and doing basic calculations of integrals and derivatives is simple to me, but for others the idea of the irrational number i is years ahead of them. Any rule can have a work around and making the work around more niche (more advanced/ obscure topics in math and tf2) will just exacerbate the problem instead of solving it. Besides, as Tiger mentioned, jb already has tons of rules that the majority of the playerbase won't read through, and adding a tiny addendum for a somewhat rare occurrence (in my experience), is pointless and will only end up creating more confusion.