The new office is further away from my house but a shorter commute in time.

For the last fourteen or so years, my commute has been one of these variations:

• Walk to a bus stop, catch a bus for an hour, walk to work. Elapsed time 1:25.
• Walk to a bus stop, catch a bus for an hour, take the Red Line, walk to work. Elapsed time 1:30. * Be dropped off at a trolley stop, catch a trolley, change to Red Line, walk to work. Elapsed time 1:05.
• Be dropped off at a Red Line stop, take the Red Line, walk to work. 0:55.

I can still do the last three of those, adding about 5 minutes for a further stop on the Red Line. But I now have a new option:

• Be dropped off at the commuter rail stop, take a train to North Station, walk to work. 0:43.

In addition to being the shortest overall time, it has the benefit of being the most predictable: a bus or a subway comes when it will, but the commuter rail trains are scheduled.