From Citizendium, the Citizens' Compendium
- Theory of Forms : The Forms are Plato's explanation of the ultimate nature of reality.
- Model-dependent realism : A philosophical position that all we can know about reality consists of networks of world pictures that explain observations by connecting them by rules to concepts defined in models.
- Scientific method : The concept of systematic inquiry based on hypotheses and their testing in light of empirical evidence.
- History of scientific method : Development and elaboration of rules for scientific reasoning and investigation.