So I was thinking again as I do from time to time about subtypes and I realized that I was thinking the wrong way about subtypes and model A. I'd previously been thinking that a producing subtype of say, ExTp is more like the other accepting subtype. Like, a producing subtype ENTp is more like an ESTp. But now I see that a producing subtype ENTp is only more similar to a producing subtype ESTp. This makes me think about how some types that aren't supposed to be similar according to model A might seem more similar. It's like temperament similarities. Like, a Ji producing subtype is similar to other Ji producing subtypes.