More Tabletop Exercises, Twitter Conspiracy Theories, BlackRock Wants Your Utilities, IgG4 Immune Tolerance

Also, no one's complained, so I'm not reading to you.

I hope you had a wonderful Christmas with your loved ones. If you’re a new subscriber who was gifted a subscription, welcome to the party. I’m glad to have you here and glad one of my readers loves both of us enough to share my slice of the internet with you. For those of you who didn’t gift this newsletter to anyone, I forgive you. There are always bir…