Self evident? You made me say it. God are you stupid.There are no errors in placing greater weight on a temperature reconstruction from the northern polar region. Less moving parts (so to speak) with more consistency because it's from the same region. A region that is the bellwether for climate change on this planet. If you want to see climate fluctuations that's where you need to go. It's self evident.
So, you couldn't find any sort of expert to say what you just said, could you. WHY does that not make you do a little more thinking? We both know why you're sticking with Greenland ice cores. It's time to bite the bullet.