[craigs]

Boston's commuter trains run on a rail network built to serve the Industrial Revolution, so trains often pull right into the centers of old New England towns and cities which can, with better transit, handle redevelopment and new construction. Trains also run through underutilized areas that can be redeveloped and upzoned. This isn't generally the freeway median-running shit you see in many younger regions.

The potential is tremendous--with frequent all-day trains to all stations, people might just take an apartment or buy a house farther out into the suburbs than they would now. The cost is also tremendous, but how else can greater Boston continue to grow?