You're sure your new roommate won't be like the last one who wore tinfoil socks and had a tendency to occasionally urinate in the refrigerator. You're sure you'll pass Math 106 this time around. You're determined to actually join some clubs this year and not just sit around in your dorm eating spray cheese from a can and watching youtube videos about cats.
The key to good worldbuilding is leaving out most of what you create. You, as the author, had damn well better know the where all that dragon food comes from, but that doesn't mean that I, as a reader, want to read a five thousand word essay about you explaining it to me. I don't need to see the math, but I can tell by the details you provide whether or not you've thought these things through to their logical conclusions.
Elodin proved a difficult man to find. He had an office in Hollows, but never seemed to use it. When I visited Ledgers and Lists, I discovered he only taught one class: Unlikely Maths. However, this was less than helpful in tracking him down, as according to the ledger, the time of the class was 'now' and the location was 'everywhere.
He taught only one class: 'Unlikely Maths'. But since the time was listed as "now" and the place, "everywhere," this was hardly helpful in tracking him down.
