Afterall.net

Consider all. Test All. Hold on to the good.

Illogic Primer Quotes Clippings Books and Bibliography Paper Trails Links Film

Truths and Propositions

Propositions and their truth values are two elemental ingredients of logical reasoning.

Propositions

A logical operator joins two propositions to form a new, complex, proposition.

Truths

A proposition is true if and only if what it says about the world is in fact the way it is.