On The Gist, we talk about the weather. Then, Mary Lane from the Wall Street Journal will discuss the new show at the Detroit Institute of Arts called "30 Americans" on display through Jan. 18. Plus, author Amy Koppelman joins us to discuss her novels Hesitation Wounds and I Smile Back, which has recently been adapted into a film starring Sarah Silverman. For the Spiel, do a state's laws always reflect the values of that state? Today's sponsors: Stamps.com, where you can buy and print official U.S. postage right from your desk using your own computer and printer. Use the promo code THEGIST to get a no-risk trial and a $110 bonus offer. Berries. Fresh berries dipped in chocolate, starting at just $19.99 are a great last-minute gift, and double your berries for just 10 bucks. Visit berries.com, click on the microphone, and use the code GIST. 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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