5 ideas
13342 | Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap] |
13251 | Each person is free to build their own logic, just by specifying a syntax [Carnap] |
3364 | All mental phenomena contain an object [Brentano] |
3225 | Mental unity suggests that qualia and intentionality must connect [Brentano, by Rey] |
17722 | The concept 'red' is tied to what actually individuates red things [Peacocke] |