On The Gist, why the Harvard Business Review's list of top-performing CEOs has adopted a new formula. The magazine's editor Adi Ignatius explains why this year's rankings decided to factor in ESG, the catchall term used to discuss a company's sustainability and ethical impact. Plus, what you learn when you actually listen closely to the words of Ben Carson. Today's sponsor: Citrix GoToMeeting. When meetings matter, millions choose GoToMeeting. Get a free 30-day trial by visiting GoToMeeting.com and clicking the "try it free" button. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at slate.com/gistplus.

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