5 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
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] |
10246 | The limit of science is isomorphism of theories, with essences a matter of indifference [Weyl] |
1513 | The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus] |