I followed misleading directions about how to get to the Museum of Fine
Arts.  At the transfer station, I found a sign telling me that, to get
there, I should take the E train to Copley.  And so I did.  At Copley
I realized, after getting off the train, that the line branches and I
should have remained on the E to get where I want to go.  I had to wait for the next
E, which happily turned out to be not too long.