This afternoon I noticed these two pieces of street art on Summer Street in Somerville, one a spray painted portrait of Nome Chomsky and the other a picture of a mushroom cloud attached to a no parking sign a little way down the street. Someone from the neighborhood has noticed the Chomsky portrait as well, wondering if this might be a form of “intellectual graffiti ” and has commented, “I presume it was motivated by political rather than linguistic reasons, but it’s still the only instance of cognitive science graffiti I’ve come across.” I agree with her that only in Cambridge would someone think to chose Noam Chomsky as as a graffiti topic, though I did run across a mention of a similar sighting in Atlanta.