 Burge’s most famous example involves the concept of arthritis. He considers an individual who is unaware that arthritis is a disease specifically of the joints. His subject believes that he has arthritis in his thigh. This belief is false, since one cannot have arthritis in the thigh. However, Burge argues, in a world in which all the intrinsic facts about the subject were exactly the same as they actually are, but in which the term ‘arthritis’ is generally used in the subject’s community to refer to rheumatoid ailments in general, the subject’s belief would have a different content. It would be a belief that the subject had a rheumatoid ailment in the thigh, and this is a belief which could possibly be true. Burge offers a wide variety of other examples making the same point, involving beliefs about such things as sofas and contracts. These latter examples are important because, if successful, they show that broad content extends far beyond beliefs about natural kinds.