We kick off our Inside Boston series of shows on local issues with a one on one conversation with MBTA General Manager Steve Poftak. WGBH News’ Bob Seay will field questions from the audience at the Newsfeed Café and on Facebook as he talks with the GM about all things T. The show comes three days before the first significant subway line shutdown for capital improvement work. It will be the first weekend that the core of the Orange Line through downtown will be shut down for work.