With respect to one of the problems with renormalizing a culture of free exchange of ideas, I was referring to Jonathan Rauch's rules for liberal science. The first rule is that knowledge is provisional; no one has the final say. That's very important.
In his first book, he uses an example of estimates of the size of the universe and how those have changed year by year and century after century. At any time, can you be sure you have the right answer? Of course not. Everything is open, everything is contestable. Nothing is beyond question or debate.
As I mentioned, that rule is being broken, because people will say that a given controversial topic is beyond debate.
The other rule is that no one has personal authority. No one can use their personal or identity status to wall off knowledge from other people. It's universal. That means, as I mentioned in my testimony today, if you do an experiment right, it should be replicable by someone who speaks a different language on a different continent centuries in the future. That too is being attacked in the academy through things like the requirement to acknowledge lived experience of a particular person or group. It's inaccessible to others. That's a defined universal principle of knowledge and of science. You'll also hear about things like an ethnic way of knowing. That, again, is a defined universal principle; knowledge is accessible to everyone regardless of identity. It exists in the ether and it's universal.