That's not the same as being obvious. Obvious means clear at first sight, or cle... | Hacker News

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daniel-cussen on Dec 15, 2012 | parent | context | favorite | on: The Mathematical Hacker

That's not the same as being obvious. Obvious means clear at first sight, or clear to a child. If you have to work for it, it's not obvious.

sesqu on Dec 17, 2012 [–]

It was clear to me as a child of maybe 8. Granted, in this day and age it's much easier to come up with elementary math, but I would say that particular equation meets the obviousness criterion of patent law, based on the aforementioned historical evidence.

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