Bernstein on Menino: The proof is in the sourcing

The Phoenix's David Bernstein has a perceptive piece on the rise of Worcester as "a political epicenter of the state." (But why "a" rather than "the"? Can there be more than one epicenter of anything?)

My favorite sentence comes near the end of the article:

While not wanting to publicly seem to be criticizing Boston's mayor, these insiders suggest that Boston's political apparatus has been devoted exclusively to enhancing the influence of Tom Menino — and preventing the emergence of other, potentially threatening, power holders.

That first clause seems to prove the rest of the sentence. That, and the recent going-away party for Sam Yoon.