That much is fine -- it's ambiguous if you don't know the general idea in the first place -- it's true of most things. The problem with type 1/2 is that it's so

That much is fine -- it's ambiguous if you don't know the general idea in the first place -- it's true of most things. The problem with type 1/2 is that it's so utterly devoid of memory hooks that even if you recognize it, and know the idea, you can't confidently identify which is which.