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Topics In this encyclopedia, topics or questions can be of two three basic types - definitional :* '''Definitional (analytic) and non-definitional (synthetic). ''': A question is ''definitional'', if an answer to the question is a definition (e.g. Examples of definitional topics include ''What is theory?''theory, ''? How should ''theory'' be defined?)'' etc. * '''Descriptive''': A question is non-definitional''descriptive'', if an answer to the question is a synthetic proposition (e.gdescriptive theory. Examples of descriptive topics include ''What is the mechanism of scientific change?''mechanism, '' How do criteria of scientific demarcation changethrough time?'', ''Can there be unchangeable methods of theory assessment? '', etc. * '''Prescriptive (normative)''': A question is ''prescriptive'', if an answer to the question is a prescriptive (normative) theory. Examples of prescriptive topics include ''How do should we evaluate new theories and methods ?''change, '' through timeHow should a TSC be assessed?).''