Blunders during my presentation
As mentioned and corrected in my additions and during the presentation, the truth table for OR on Slide 11 of the tutorial is wrong. While presenting, I wrongly mentioned that the examples on Slide 12 were wrong, too, but no, I merely got confused by the "ands" in the text. The examples for OR are correct.
My second blunder was to wrongly identify q as a premise at the beginning of my explanation of Slide 13. I corrected it immediately but the confusion may have lead comments off track.
The motivation for making the presentation was to show that a false premise in a syllogism does not necessarily mean that the conclusion is false, too. This mistake is easily made because often it is actually the case that the conclusion is false, too. That experience may misguide our intuition. Toward the end of my presentation, I made my third blunder by myself making that false inference to call a conclusion false upon finding a premise of an implication to be false but became aware of it only after the session. So, we need to make sure that my withdrawal of that statement accompanies the podcast.