Doing exercises in Stan Baronett's Logic I did a truth table for problem 30 page 409 and the argument is invalid - for table with P = T, and Q R S all F, the premises are true but the conclusion false.
That was very helpful! Thank you. In the future, when I encounter a problem like this I will be sure to do a truth table to make sure the dang thing is valid in the first place.
"What we have loved
Others will love, and we will teach them how."
Wordsworth
I remember going to college with all my early beliefs still intact. I was raised Roman Catholic. Jesus was my personal Savior. They held together until I switched my major to Philosophy in the second summer. (I was doing so poorly in music that I had to switch in order to bring up my point average enough to continue in school). I had changed to Philosophy primarily because I had no idea what I wanted to study, or should study. Philosophy offered the most, free electives (you couldn't just take any courses you wanted to back then) and by taking free electives in Sociology, Psychology and Anthropology, I figured I could find out what I would like best. As it turned out, I liked Philosophy best.
That was very helpful! Thank you. In the future, when I encounter a problem like this I will be sure to do a truth table to make sure the dang thing is valid in the first place.
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