Ah, nothing like a little logical paradox for Christmas. Today we will look at how to make a valid argument—that disagrees with itself and makes no sense. Dive in to the paradox of entailment. When ...

For regulars at Ars Technica, the forums are as much a part of the site’s identity as the articles. And where there are forums, there are flame wars. The BattleFront is infamous for its contentious ...

Yuri Arcurs peopleimages.com / Getty Images/iStockphoto When I was in college, I remember naively signing up for a course called “Introduction to Logic.” It turned out to be one of the greatest ...

Back in 1955, Rudolph Flesch wrote a landmark book entitled Why Johnnie Can’t Read . Someone now needs to write a book called ...

Solutions are available by request for course instructors and the self-taught. These documents are intended for the spring 2024 version of PHI 201, Introductory Logic. However, they will be fine-tuned ...

I think it is both possible and necessary for people to disagree with each other constructively on important matters. All perspectives deserve to be patiently heard, regardless of how egregious they ...

Some people are really good at logical reasoning. They quickly recognize that a particular argument is well-structured and that one point follows clearly from the next. Other people seem more strongly ...

Patent prosecution involves one side arguing for, and another side arguing against, the validity of claims in a patent application. This takes the form of a written discourse, in which an Examiner for ...

Using Aristotle's dialectic to define Aristotle's dialectic. Dialectic, unlike logic, is concerned with particular individuals with whom we are engaged with in argument. The argument proceeds by ...