You can take an MBTA train to both Worcester and Providence from Boston. The MBTA is also the authority that manages the subway system, the bus routes and other services in eastern Massachusetts. Not just Boston.
Anyone ever confuse Newark with NYC? How about Jersey City? And yes, Silicon Valley does not stretch from Sausalito to Berkeley through Oakland and SoMa down to San Jose, either. Especially when you're pushing mindless bragging rights.