Robert Brandom is an American philosopher known for his work in the fields of philosophy of language, philosophy of mind, and epistemology. He is a prominent figure in the Pittsburgh School of philosophy and has contributed significantly to the development of inferentialism, which emphasizes the role of inferences in understanding meaning. Brandom's influential book, Making It Explicit, argues that meaning arises from the social practices of language use. He explores how our commitments and entitlements shape our understanding of concepts, highlighting the importance of dialogue and interaction in the formation of knowledge and meaning.