Material biconditional: A truth-functional sentence formed by connecting two sentences by ‘if and only if”; such sentences are true if and only if the two sentences connected have the same truth value.  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… Read More

Material conditional: A truth-functional sentence formed by connecting two sentences by ‘if’ and ‘then’; such sentences are false if and only if they have true antecedents and false consequents. 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… Read More

Materialism: doctrine according to which matter is the sole ultimate ground of being. In philosophy, not the popular idea of an acquisitive ethic, but of  a broader onto-axiology which is also anti-acquisitive – as with Mo Tzu, Helvetius and Marx over 2300 years. Opposed to idealism, it means materiality (space-time occupancy) alone is real and determining,… Read More