zombie84 said:

In photography, when you copy a negative you get a positive. When you copy a positive, you get a negative.

So you have an original negative. You make a copy, which is a positive; this is the IP. But you can't make prints off of this, because they will be negative. You copy it, making the IN, and then from this negative you can now make positive prints for projection. The result is that they are copies of a copy (IN) of a copy (IP) of the original.

Does this make sense? It is indeed a bit convoluted.

Yeah, that makes sense. I knew that negatives go to positives and to negatives. Haha, for some reason it all seems clearer now, and I'm having a harder time understanding what it was I didn't understand, especially since, as I said, I've learned all this before! Perhaps my confusion was answered further on in the article where it states that you don't want to use the Oneg to make prints because you want to limit your interaction with it, hence the copies of copies. But I think it was just the wording, the "you can't make a copy of the interpositive (to make prints)" immediately followed by, "make a copy of the interpositive (to get the internegative)." The seeming paradox in the wording was what threw me, I think. So, yes, thank you for explaining further. I'm back in the loop.