Um... you've been making a bunch of statements that at least assume certain values. You only introduced this "scientific" standard when someone disagreed with yours. That seems... suspicious.

As it happens, I mostly share your values. But it's not cool to just turn off conversation based on values because someone doesn't share yours, and because they don't provide a scientific basis.

You're likely right that you could never get agreement on (certain) values with Youden. The conversation still might be worthwhile, though.