Rationality in Discovery

This thesis. Propositions.1. ProblemBefore one can stand on the shoulders of giants one first has to climb them.2. RationalityAssumptions about processes of scientific discovery imply assumptions about psy- chological processes and vice versa.3. NeuropharmacologyA part of reasoning in neuropharmacology can be modeled as reasoning about quali- tative differential equations and can be assisted by a computer.4. LogicReasoning in scientific discovery includes logical fallacies which are necessary to introduce new hypotheses by abduction.5. CognitionTo understand the rationality of (secondary) cognitive processes of symbolic problem solving in science one also needs to understand how these processes are controlled by (primary) cognitive processes of probabilistic learning.6. ComputationOne has learned something when one can compute part of the same output with less input.7. TheoryRationality in discovery in theory includes inferring hypotheses that best explain observations and inferring predictions that can experimentally test those hypotheses best.8. PracticeRationality in discovery in practice also includes inferring the best interventions in designing drugs treatments and experimental conditions to explore phenomena.9. DiscoveryInterdisciplinary scientists build bridges that other scientists are not eager to cross.