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.
YMMV: Mac Hall
Genius Bonus: The comic Demon Days builds its joke around the Maxwell's demon thought experiment. What raises it from "clever reference" to this trope is the fact that it's been shown that such a demon would not, despite Maxwell's assertion, violate the Second Law of Thermodynamics...just like J.M. tells Maxwell.