Example: joining Zip.ca.
Deduction: if p then q, p, therefore q.
Inductive generalization: Many X are Y, so maybe all X are Y.
Inference to the best explanation: Hypothesis H is a better explanation of phenomena P than available alternatives, so maybe H is true. Explanatory coherence.
Reasoning based on probabilities and statistics.
Practical induction: Action A has served in the past to accomplish goal G. So A is a good way to do G.
Inference to the best means: Action A is the best available way to accomplish G, so maybe I should do A.
Deliberative coherence: Action A fits best with all my goals, so I should do A.
Mathematical decision theory (see week 5).
Procedural/substantive dispute: Can we legitimately argue about ultimate goals?
1. They are independent of each other.
2. Theoretical rationality depends on practical rationality: Theoretical reason is justified because it helps us to accomplish our practical aims.
3. Practical rationality depends on theoretical rationality: Practical rationality is justified because we have good reasons to believe that making decisions based on reason is effective.
4. They are mutually interdependent - coherent.
Computational Epistemology Laboratory.
This page updated Sept. 26, 2005.