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  1. status update
    Mathematicians No Longer Have to Hoard This Japanese Chalk“If you write with a nice gel pen, it feels like it just flows across the page — it’s the same idea.”
  2. chalk
    Inception’s Crazy Chalkboard’Inception’ faces off with ‘Good Will Hunting,’ ‘The Simpsons,’ ‘I Heart Huckabees,’ and ‘School of Rock.’