A layperson looks at this and sees an incomprehensible mess. A mathematician looks at this and says, "Well, yeah, obviously." A layperson or mathematician who doesn't want to admit they don't comprehend this will also shrug and say, "Well, yeah, obviously." But I don't want you to be one of those people. The problem is that symbolic logic, if you're unfamiliar with it, can be really intimidating on the surface. But I promise you that at the end of this short video, you'll understand everything that's going on here and agree that yes, this is obviously true.
This video is intended as a primer on first-order logic to help students who are learning this subject for the first time. If it's something that you're already familiar with, this might not be the video for you. Or maybe you'll see a fresh perspective, new ways of thinking about, or new ways to teach the material that you'd never considered before. I probably shouldn't discourage people from watching my own video, but I just w