Every sci-fi fantasy world comes with a canon of rules and back stories. Fans can be fiercely protective of their favorite canons, but canons are often patchworks created by people with conflicting ideas. Does a dense canon make better storytelling? Or does it alienate casual fans? I talk with Derek McCaw, who runs the website Fanboy Planet. And a rabbi explains why the Star Trek canon has a lot in common with The Torah.Learn more about your ad choices. Visit megaphone.fm/adchoices

Learn more about your ad choices. Visit megaphone.fm/adchoices