LogFAQs > #973265200

Also, while not confusion, I've always thought "Sound" should be a type, and was surprised when they threw Fairy in over it, considering so many sound moves/abilities already existed. Pokemon, too. Chatot, Chingling, Exploud line, etc. are just asking to be Sound.

On the same level, I guess Fairy tricks me up a lot, since I still have trouble remembering the strengths/weaknesses since they're not very apparent.

EDIT: To this day, I will argue adding Sound makes more sense than adding Light, since people only ever wanted Light to counter Dark, but Dark began more as "evil/dirty fighting" than literal darkness, and was thus easily opposed by Fighting, which is the "heroic/good fighting" type.