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.
What an Idiot: Bart having his plans for his "Big Butt Skinner" balloon in his pockets (blueprint, notarized photos, and some alternate titles for the balloon). If he was any kind of master prankster (even at the tender age of 10), he would have hidden or destroyed the evidence, but, being the Book Dumb troublemaker that he is, that didn't happen.