Ideas from 'Change in View: Principles of Reasoning' by Gilbert Harman [1986], by Theme Structure

[found in 'Change in View: Principles of Reasoning' by Harman,Gilbert [MIP 1986,978-0-262-58091-5]].

green numbers give full details    |     back to texts     |     expand these ideas

2. Reason / A. Nature of Reason / 1. On Reason
It is a principle of reasoning not to clutter your mind with trivialities
If there is a great cost to avoiding inconsistency, we learn to reason our way around it
Logic has little relevance to reasoning, except when logical conclusions are immediate
The rules of reasoning are not the rules of logic
2. Reason / A. Nature of Reason / 4. Aims of Reason
Implication just accumulates conclusions, but inference may also revise our views
10. Modality / B. Possibility / 6. Probability
The Gambler's Fallacy (ten blacks, so red is due) overemphasises the early part of a sequence
High probability premises need not imply high probability conclusions
11. Knowledge Aims / A. Knowledge / 4. Belief / c. Aim of beliefs
We strongly desire to believe what is true, even though logic does not require it
13. Knowledge Criteria / B. Internal Justification / 5. Coherentism / a. Coherence as justification
In revision of belief, we need to keep track of justifications for foundations, but not for coherence
Coherence is intelligible connections, especially one element explaining another