A curios announcement from Sharpie recently for people who still physically use pencils and pens, their new Liquid Pencil is set to hit stores next month with a “September 2010” release date. Now, before visions of the classic erasable pen spring to mind, this looks entirely different better. Not just because it eliminates broken lead and sharpeners, but the liquid graphite actually becomes permanent after three days, leaving you exactly 72 hours to fully measure the weight of your scrawlings.