Immediate certainty, like absolute cognition and thing in itself, includes a contradictio in adjecto

The passage

"Immediate certainty", just like "absolute cognition" and "thing in itself", includes a contradictio in adjecto.

JGB 16, second sentence: »Dass aber "unmittelbare Gewissheit", ebenso wie "absolute Erkenntniss" und "Ding an sich", eine contradictio in adjecto in sich schliesst, werde ich hundertmal wiederholen«. The sentence gives no ground for the contradiction; the aphorism goes on to take »ich denke« apart (a-nietzsche-ich-denke-has-no-immediate-certainty), which is a ground for the first of the three cases and not for the other two. The map sets this claim as an attack on Kant's c-kant-things-in-themselves-thinkable-not-knowable, which states that we must at least be able to think things in themselves: a concept that includes a contradictio in adjecto cannot be consistently thought, so the statement denies what the target states. No sentence of the aphorism names Kant or a passage of his, and the sentence gives no ground; the link rests on the words »Ding an sich« alone, and the map says so.