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.
Fridge Logic: Why would the troll let the first to goats pass? After they tell him that the next goat is on the way, why not just eat them and wait for the next one? Sure, he still would have gotten trounced by the third goat, but he would have died with a full stomach.