4 ideas
8920 | Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz] |
8790 | The 'doctrine of the given' is correct; some beliefs or statements are self-justifying [Chisholm] |
22137 | Observation can force rejection of some part of the initial set of claims [Duhem, by Boulter] |
18197 | Experiments only test groups of hypotheses, and can't show which one is wrong [Duhem] |