In this book, Chris Collins and Paul Postal consider examples such the one below on the interpretation where Nancy thinks that this course is not interesting: Nancy doesn’t think this course is interesting.
Normally, a speaker uses a first person singular pronoun (in English, I, me, mine, myself) to refer to himself or herself. To refer to a single addressee, a speaker uses second person pronouns (you, yours, yourself). But sometimes third person nonpronominal DPs are used to refer to the speaker--for example, this reporter, yours truly--or to the addressee--my lord, the baroness, Madam (Is Madam not feeling well?).
Any theory of grammar must contain a lexicon, an interface with the mechanisms of production and perception (PF), and an interface with the interpretational system of semantics (LF). A traditional way to relate these three components in generative theory is through a derivation. Noam Chomsky's Minimalist Program postulates that grammatical derivations are constrained by economy conditions, requiring that derivations be minimal.