Comment: Pi might look random but it's full of hidden patterns Published on: 14 March 2016 Writing for The Conversation, Steve Humble discusses the diversity of patterns that can be seen in the digits that make up Pi. Steve Humble , After thousands of years of trying, mathematicians are still working out the number known as pi or 鈥�?鈥�. We typically think of pi as approximately 3.14 but the to calculate it more precisely worked out its value to over 13 trillion digits after the decimal point. We have known since the 18th century that we will never be able to calculate all the digits of pi because it is an irrational number, one that continues forever without any repeating pattern. In 1888, the logician John Venn, who also invented the Venn diagram, attempted to visually show that the digits of pi were random by drawing a graph showing the first 707 decimal places. He assigned a compass point to the digits 0 to 7 and then drew lines to show the path indicated by each digit.
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