ETHNIC DINING TALK: Tuesday, October 30, Tyler Cowen, author of "Discover Your Inner
Economist," discusses "Every Meal Counts: How to Get the Best Food
Possible in Washington, D.C." and signs his book. Books will be for
sale. Free entry. 6:30 p.m. Cleveland Park Branch Library, 3310 Connecticut Ave. NW. 202-282-3072.
Of course you are encouraged to come…