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TLDR: Requires guess before it answers ... Revolutionary ... US Patent 6820800

• tmh88j 15y ago
  Does the patent cover the concept or the hardware/software?....or both?
  • sp332 15y ago
    The patent covers how the calculator decides whether an answer is "reasonable".
    • eru 15y ago
      Instead they could ask for a range and an estimate of how likely you think that the actual answer is inside that range.