On Interpretation gave me flashbacks to high school. I remember learning about grammar, parts of speech etc. in high school felt like nothing but a waste of time to me. It made sense in elementary school, but in high school it felt like learning useless information, learning what now came intuitively to me. I could read and write just fine without having to think of the rules of grammar.
Reading On Interpretation made me realize that I no longer think that continuing to learn the rules of grammar (after it has become intuitive) is a complete waste of time, because it is helpful both for clarity of thought and for analysis purposes. And there's always knowledge for knowledge's sake, I suppose. I still find it a boring and often superfluous topic though.
I don't have much else to say for this one.