Stanislas Dehaene, in his fascinating book The Number Sense, describes an experiment with the Sheba, a chimp who not only learned to count accurately but learned to order the Arabic numerals by size from 1 to 9, and could accurately compute the inequality between any two of them presented to her and pick the larger one, which shows extremely impressive symbolic and mathematical understanding.

Two bits of hip-hop/r&b media have come to my attention in the last few days.

In their not-so-complimentary review of Julian Casablancas' solo debut, Pitchfork pointed to this fierce 2002 performance from the David Letterman show by his band The Strokes.