Campuses across the nation are debating what is and isn’t free speech. CEOs and online trolls are canceling young people whose positions they consider hateful. Pro-Israel and pro-Palestinian faculty are taking sides. Students are hollering at administrators to do the same. I am a lecturer in rhetoric at San Diego State University. Our biggest problem on campuses isn’t apathy, equity or AI. It’s that we aren’t teaching kids to grapple with complex ideas. I don’t just mean they lack the ability for analytical thinking or deep focus — though these are real and troubling issues — but that young people...