Lesson 3 states the order for completing truth tables is: standard variables, negated variables, propositions in (). Yet I noticed while watching the Lesson 3 session on the DVD and in the example at the bottom of page 23, the operations are not always followed in that precise order; sometimes the parenthesis are completed prior to the negation. How important is this order? Does it matter only if there is a negation within the parenthesis, as in the example at the top of p 23? Continue reading Negations and Parentheses →