Retired engineer, scientist, and frequent CrossFit.com rest-day discussion participant Jeff Glassman talks with Tony Budding about argument, logic, science, and his reasons for engaging in the rest-day discussions.

One of the foundations of the scientific method (and other fields based in logic, such as mathematics and law) is precision in language. This is essential; ambiguity and unclear terms muddy the discussion and make rational process impossible. What motivates Jeff is the potential for the quality of discussion that can be created and the influence and reach that sane, logical argument can have–whether you’re making (or evaluating) assertions about politics, or fitness, or any other topic.