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.
Values Dissonance: The first episode shows Paul making gunpowder for a school prank; they even show the recipe on screen! Can you imagine how parents these days would react to a show teaching their kids how to make explosives?