November 2025
Beginner
416 pages
8h 6m
English
Content preview from Logic For Dummies, 2nd Edition
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Chapter 5
Embracing the Value of Evaluation
IN THIS CHAPTER
Evaluating SL statements
Identifying a statement’s main operator
Knowing the eight forms of SL statements
Recapping evaluation step-by-step
People love simplicity.
Have you ever read halfway through a movie review and then skipped to the end to find out whether the movie got an easy-to-grasp thumbs-up or thumbs-down? Or have you paged through a car magazine to check out the simple 1-to-5-star rating that every car received? And surely you’ve never sat down with a friend to rate the appeal of people you both know on a scale of 1 to 10.
Movies, cars, and people are complicated. There’s so much to understand about their makeup. But (it bears repeating) people love simplicity. I’m sure that you, like me, feel a sense of relief when you can reduce all that complexity down to something simple that you can easily make sense of. Logic evolved with this need in mind.
In Chapter 4, you discover how to take a complicated statement in English and write it with just a few symbols in sentential logic (SL). In this chapter, you take the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.