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Maybe they should make custom cleaning brushes that are tailored to each tooth-brush they produce.

• jarel 13y ago
  But how do you clean the cleaning brushes?
  • Theriac25 13y ago
    By making custom tooth-brush cleaning brush cleaning brushes that are tailored to each tooth-brush cleaning brush they produce?
    • hamburglar 13y ago
      At each iteration, the shape changes slightly, until eventually, the design stabilizes to a device that looks suspiciously like a turtle.
      • jessaustin 13y ago
        So you hypothesize that there exists a fixpoint for the cleaner function?
• koliber 13y ago
  It would be shaped more-or-less like your teeth.