This problem was first raised by David Hume, and was revived in current discussion by Richard Moran, Kendall Walton and Tamar Gendler (who introduced the term in its current usage in a 2000 article by the same name).
Richard Nixon | Richard Wagner | Richard Strauss | Richard Branson | Cliff Richard | Richard Gere | Richard Burton | Richard Hammond | Richard | Richard Dawkins | Little Richard | Richard Feynman | Richard Attenborough | Richard M. Daley | Richard I of England | Richard Thompson | Richard Francis Burton | Richard Thompson (musician) | Richard Pryor | Richard Linklater | Richard III of England | Richard Petty | Richard II | Richard II of England | Richard E. Byrd | Maurice Richard Arena | Muhal Richard Abrams | Richard Herring | Richard Wright | Richard Stallman |