Shigeru Kondo, a systems engineer in his 50s at a food company in the central Japanese prefecture of Nagano, in August calculated pi -- the ratio of a circle's circumference to its diameter -- to five trillion digits, almost doubling the accuracy of the previous world record.It's "believed" to go on forever? Who knew the media was so skeptical of mathematical proof?
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Calculating a more accurate pi, which is believed to go on forever, has been a challenge for scholars for thousands of years, ever since the parameter was used in ancient Egypt.
This makes me think about how I teach mathematics. Just because I've proved something rigorously, does that mean students believe me? That is, do they now accept it as genuine fact? How much of a difference is there, fundamentally, between not understanding a proof and doubting a proof? Things to ponder...
HT: Gary Davis
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