If Nine Was One
My interest was piqued this afternoon by a post on Medium regarding the number nine. Now the content on Medium varies from the rigorous to the fantastical, depending on how the algorithm interprets the direction in which you want to go based on your reading habits. The stuff I get back I try and filter before actually reading a post, to at least partially game the system as much in my favour as possible, and avoiding the more hysterical crap that can appear in your inbox if you're not careful. What interested me was not the old arithmetical party game of multiplying any number by nine and adding the digits of the product together sequentially until the number is reduced to a single digit and - ta-da! - revealing the number nine; intriguing though that particular numerical phenomenon happens to be. Rather, the author of the post relates that her birth year similarly reduced by addition of individual digits similarly results in a result of nine, both in the Gregorian calendar we use ...