I was going to write something about the many recent instances of protests on college campuses that had the intent and effect of making it impossible for invited speakers to speak, and for people who were interested in engaging with their ideas to hear them.

But, then, I remembered that I already wrote about this 11 years ago.  So, it’s nothing new, and I’m still against it.

The only thing I’ll add is that while the original post focused on scientific ideas, the same can be said of the benefits of open expression and criticism of other kinds of ideas as well.

You (usually) don’t have to listen to ideas you oppose for very long.  But, when you go a step further and try to prevent other people from hearing those ideas, you’ve become a threat to human flourishing.