Why do CS doctoral candidates have such a fascination with typesetting? I mean, be into whatever you’re into, I guess. But as soon as someone starts talking about LaTEX and how they spent months on their macros, I think “another hapless victim has fallen into LaTEX’s trap.” It’s like an ant lion that feeds on procrastinating students.
In my master's there were like 30 pages of formulas, all interdependent. Typing/retyping these would take forever.
Also, something as simple as having per-chapter files or working with an acceptable editor also helps.