LAURIE ROSENWALD is the author of “HOW TO MAKE MISTAKES ON PURPOSE” and the forthcoming memoir: “MEMWAH.”  She explains how to make the best of lucky accidents and laugh at all the others.    Laurie talks to retired tv news producer Frank Silverstein about her remarkable great-grandfather Julius Rosenwald, founder of Sears, who built thousands of schools for African Americans in the Jim Crow South; her grandmother’s decision not to use her ticket for a voyage on the Titanic; and her own dramatic voyage through the colorful world of art and entertainment in New York City.These are vibrant tales from a brassy New York woman.