Combining Texts

All the ideas for 'Through the Looking Glass', 'The Logical Syntax of Language' and 'Causation in a Physical World'

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7 ideas

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

13342

Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap]

5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention

13251

Each person is free to build their own logic, just by specifying a syntax [Carnap]

7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing

21982

I only wish I had such eyes as to see Nobody! It's as much as I can do to see real people. [Carroll,L]

26. Natural Theory / C. Causation / 1. Causation

8404	Explain single events by general rules, or vice versa, or probability explains both, or they are unconnected [Field,H]

26. Natural Theory / C. Causation / 5. Direction of causation

8401	Physical laws are largely time-symmetric, so they make a poor basis for directional causation [Field,H]

8400	Identifying cause and effect is not just conventional; we explain later events by earlier ones [Field,H]

8402	The only reason for adding the notion of 'cause' to fundamental physics is directionality [Field,H]