User blog comment:Silkworm Bot/Unpopular opinion/@comment-26268426-20170509160638

Well strange thing is that, type effectiveness always changes. Like how once Psychic was super effective against ghost and vise versa but now Psychic is not super effective anymore against ghost but ghost is supereffective against Psychic. My thought is Bug and Poison could be like Fire and Fairy. Fire attacks are not super effective against Fairy, but Fairy attacks are weak against fire.