so basically effect is like if somebody had a bowl of chocolate and they spilled it on the ground.. the effect would be that the chocolate is now on the dirty floor.
affect is like if you were to make somebody sad or made it would affect their emotions
Even the popcorn bags have a warning on them telling you not to. The popcorn setting on many microwaves has only a preset time and no humidity sensor, which means that the microwave can't tell when something's burning.