So, as I’ve used WaniKani more, I’ve started to notice that radicals are often taught well ahead of time. Usually, it’s just one or two levels ahead, which I suppose is fine, but, occasionally, a radical will be taught far before it ever sees any use. Take the “animal” radical, which is taught at level 6, but is not even used until level 15 (for the cat kanji). Also “brush,” which is taught at level 9 but also not used until level 15, and “pope,” as well as “spicy,” which are taught at level 9 as well but are not used until level 16. “Stairs” is taught at level 10 but not used until level 23.
What is the reason for this? My best guess is that these are remnants from when kanji were taught at different levels than they are now, but you would think that the radicals would also be adjusted accordingly. Anyone have any ideas?