Nitpick: Emeralds are a bad example. An “emerald” is just green beryl—a blue instance of the same mineral is just a blue piece of beryl. They exist, but they aren’t emeralds.
Philosophy of Science textbooks mention that fact. Goodman chose a bad example and now we must all pay the price.
Nitpick: Emeralds are a bad example. An “emerald” is just green beryl—a blue instance of the same mineral is just a blue piece of beryl. They exist, but they aren’t emeralds.
Philosophy of Science textbooks mention that fact. Goodman chose a bad example and now we must all pay the price.