Heh. But while it's silly to put too much into measuring yourself against arbitrary lists, reasonably good ones like this should at minimum be a guide to "Here be dragons". As in areas that are messy and/or otherwise complicated enough that you should make note so that you'll know to study them if needed in the future. Mixing metaphors while still staying reptilian, so that you don't one day ask yourself "Why have I found myself in an alligator infested swamp?"