Logic Without Math 3; Truth Trees

Intermediate symbolic logic. Expalins full truth trees and their abbreviated version. Abbreviated version shown to also verify syllogisms. No need for prior knowledge of philosophy and no math calculation involved.

0:00 Introduction
1:10 Idea behind it
4:01 Full tree rules
9:24 Full tree examples
22:34 Abbreviated tree rules
23:18 Abbreviated tree examples

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