Truth-table test: A type of test for tautologousness of truth-functional sentences. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11. 

Truth-table definition: A type of definition for logical operators based on an exhaustive listing of the truth-value of sentences formed by those operators. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford,… Read More

Truth-functional sentence: Any sentence whose truth-value is a function of the values of its component sentences. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11. 

Truth-functional argument schema: An argument schema whose validity may be determined by converting it to a conditional sentence schema and  testing the latter for tautologousness. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support… Read More

Theoretical sentence: A sentence essentially containing a term whose meaning is embedded in a particular scientific theory. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11. 

Tautologous schema: A sentence schema such that it necessarily becomes a true sentence (tautology) when its variables are appropriately replaced. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11. 

Truth-functional argument schema: A sentence essentially containing a term whose meaning is embedded in a particular scientific theory. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11. 

Theory of probability: A theory designed to interpret the term ‘probability’ and to obtain initial probability values for probability claims. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11. 

Syllogism: An argument formed by some combination of categorical sentences, containing two premises and three distinct terms, with one term (middle term) occurring in both premises but not in the conclusion. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in… Read More

Sound argument: An argument with all true premises, a valid logical schema and no methodological flaws. Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.