FYI you are correct about that warming period being in medieval times. I thought it was, but hadn't read it in a long time and wasn't sure. I don't remember details over time, but the general idea. So I took it out because I didn't have time to check it. I also had seen the counter argument from your side on it before too.
“Experience should teach us to be most on our guard to protect liberty when the Government’s purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.” — James Madison