COMPLETENESS: All facts (truths) possible derived from axioms

CONSISTENCY: No untrue facts derived from axioms.

BIAS: To influence, prejudice

VARIANCE: The square of the standard deviation

PARADIGM: A Pattern, an example

EXOGENOUS VARIABLE: External influence

ENDOGENOUS VARIABLE: Coming from within the model

A PRIORI GROUNDS: From cause to effect, valid independently of observation

MODEL: Coherent group of general propositions used as principles of explanation

HYPOTHESIS: Proposition(s) proposed for explanation of some phenomena

ASSUMPTIONS: Act of taking for granted or supping

PREMISE: A proposition from which a conclusion is drawn

AXIOM: A proposition assumed without proof for purposes of studying consequences that follow

THEOREM: A statement embodying something to be proved

POSTULATE: To claim or assume the existence or truth of

COROLLARY: To bring into mutual or reciprocal relationship

HEURISTIC: Serving to find out, further investigation

OCCAM'S RAZOR: "It is vain to do with more what can be done with fewer" or "Entities are not to be without necessity"

ANALOGUE: Corresponding in function

INSTRUMENTALISM: Hypothesis & theory solely as tools that are useful instruments

METAPHYSICAL STATEMENT: Topopper [sic] incapable of being shown false

EPISTEMOLOGY: Branch of philosophy which investigates the origin, nature, methods, and limits of human knowledge

EXTENSIVE MARGIN: Increasing time without increasing resources

INTENSIVE MARGIN: Increasing resources without increasing time

TRUNCATION: To shorten by cutting off a part

CETERIS PARIBUS: Other things being equal or unchanging

REES-HAMILTON: O inflation if 15% unemployment

FRICTIONAL UNEMPLOYMENT: Workers changing jobs (voluntarily or involuntarily) usually to similar occupation (10-week maximum)

STRUCTURAL: Changes in industrial, occupational, and demographic structure of economy

DEFICIENT-DEMAND: Related to structural but due to insufficient aggregate demand
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