(Harvard.) In an imaginary world where San Francisco neighborhoods are represented by stars’ hairstyles, the Marina is Bryan Ferry – artfully coiffed, with a subtle smattering of muss to keep the wispy-haired skeptics on their toes. Bay St. between Broderick and Baker, on the western edge of the Marina, embodies this aesthetic as well as any residential block in the district. Since nothing remotely unusual appears to happen here much – short of the odd cataclysmic earthquake and subsequent fire (see: October 1989) – it’s up to the block’s architecture, immaculately trimmed foliage, and occasional through-walker to provide a bit of Blocker-style backbone. Otherwise, we’re relegated to a piece about all the college alumni license plate frames and window decals slapped on cars parked along this street. Not such an enticing slant....