4 ideas
10800 | The values of variables can't determine existence, because they are just expressions [Ryle, by Quine] |
14082 | No sortal could ever exactly pin down which set of particles count as this 'cup' [Schaffer,J] |
14081 | Identities can be true despite indeterminate reference, if true under all interpretations [Schaffer,J] |
8693 | An 'abstraction principle' says two things are identical if they are 'equivalent' in some respect [Boolos] |