Combining Texts

All the ideas for '', 'On the General Idea of Proof Theory' and 'Interview with Baggini and Stangroom'

expand these ideas     |    start again     |     specify just one area for these texts

---

9 ideas

1. Philosophy / D. Nature of Philosophy / 5. Aims of Philosophy / e. Philosophy as reason

6855	Interesting philosophers hardly every give you explicitly valid arguments [Martin,M]

2. Reason / E. Argument / 1. Argument

6856	Valid arguments can be rejected by challenging the premises or presuppositions [Martin,M]

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

11211

If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt]

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13827

Logical consequence isn't a black box (Tarski's approach); we should explain how arguments work [Prawitz]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

11210

Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt]

11212

The sense of a connective comes from primitively obvious rules of inference [Rumfitt]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

13826

Model theory looks at valid sentences and consequence, but not how we know these things [Prawitz]

12. Knowledge Sources / B. Perception / 1. Perception

6857	An error theory of perception says our experience is not as it seems to be [Martin,M]

19. Language / F. Communication / 3. Denial

11214

We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt]