Full quote on the paragraphs mentioning Comey, I don't think this is about "mind control" you seem to refer to

Another new member of Bridgewater's management committee is James Comey, the firm's top lawyer, who served as Deputy Attorney General in the Bush Administration between 2003 and 2005. "Most of my friends think I am having a midlife crisis," Comey told me in a recent phone conversation, referring to his decision, last year, to leave Lockheed Martin and accept an offer from Dalio. He was tired of corporate politics and craved a setting where people spoke truth to power, but, he said, it took him a while to get used to dealing with Dalio. "When Ray sent me an e-mail saying, "I think what you said today doesn't make sense," I tended to think, What does he really mean? Where's he coming from? And what is my play? Who are my allies? All of the things you think about in the outside world. It took me three months to realize that when Ray says, "I think you are wrong," he really means "I think you are wrong." He's not trying to provoke you, or anything else."

Comey was initially struck by how long it took Bridgewater to make decisions, because of the ceaseless internal debates. "I said, `Lordy, we have to put tops on bottoms. Let's get something done,' " Comey recalled. But he added, laughing, "The mind control is working. I've come to believe that all the probing actually reduces inefficiencies over the long run, because it prevents bad decisions from being made." Comey said of Dalio, "He's tough and he's demanding and sometimes he talks too much, but, God, is he a smart bastard."