I love the philosopher that wrote this, John Perry. He wrote this other essay called "The Essential Indexical" that is about how we assign reference to the word

I love the philosopher that wrote this, John Perry. He wrote this other essay called "The Essential Indexical" that is about how we assign reference to the word "I" in different contexts. Read it if you want an example of what Paul Graham refered to in one of his essays, when he says the lesson of philosophy '...is that the concepts we use in everyday life are fuzzy, and break down if pushed too hard." You certainly should read "The Essential Indexical" if you think you understand that when you use the word "I" it unambiguously refers.