Ideas from 'The Problem of the Essential Indexical' by John Perry [1979], by Theme Structure

[found in 'Self-Knowledge' (ed/tr Cassam,Quassim) [OUP 1994,0-19-875116-8]].

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11. Knowledge Aims / A. Knowledge / 4. Belief / b. Elements of beliefs
Indexicals are a problem for beliefs being just subject-proposition relations
19. Language / C. Assigning Meanings / 9. Indexical Semantics
If we replace 'I' in sentences about me, they are different beliefs and explanations of behaviour
Indexicals individuate certain belief states, helping in explanation and prediction
19. Language / D. Propositions / 6. Propositions Critique
Indexicals reveal big problems with the traditional idea of a proposition
27. Natural Reality / A. Space-Time / 2. Time / b. Tensed (A) time
Tense is essential for thought and action
27. Natural Reality / A. Space-Time / 2. Time / c. Tenseless (B) time
Actual tensed sentences cannot be tenseless, because they can cite their own context