Digital technology was supposed to usher in a new age of endless prosperity, but so far it has been used to put industrial capitalism on steroids, with Internet startups selling for billions, but destroying more jobs than they create, extracting more cash from circulation than they put in, and disrupting entire marketplaces and neighborhoods in the process. Douglas Rushkoff, author of “Throwing Rocks at the Google Bus,” explains what went wrong and how to optimize our economy for distributed prosperity instead of mindless growth. 92nd Street Y, 1395 Lexington Ave. Mar. 30, 7:30 p.m. Tickets are $32-35, $15 for those 35 and under at 92y.org.