These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Defictionalization: Due to Translation Convention, the characters are actually speaking a fictional language called Orth rather than English. A friend of the author's developed the language as a full-fledged Con Lang at the author's request.
The fill wiring diagram of how about came here from extramuros and from small feeder maths in the region, and how they moved from one math to another, was complicated, and not really worth explaining.
That's right: there's something that Neal Stephenson considers too complicated to explain. It's like being told that there is an upper limit to infinity.
Fridge Logic: At one point the fraas build a Faraday Cage, to keep any signals from entering the room. A few minutes later their badges respond to a signal from outside. It is never commented on, but clearly such a signal should not have been able to enter the room.