Signs of the times: the bus stop at the MIT campus, on Mass. Ave., across the street from the entrance to the Infinite Corridor.

On the bus stop itself, there is a large poster, emblazoned "Not In Our Name", which has had other messages added throughout the day -- "Give diplomacy a chance"; "Support the troops; bring them home", "Bu**sh**".

Near the crosswalk, there's one of those traffic signs on wheels that displays directions in lights -- this one is warning drivers that the road is cut to one lane a block or two further up for construction work. At least that's what it was doing this morning. This evening, it alternates with another message: "Nerd Crossing".