David Bau

Citibank once lost nearly a billion dollars by messing up a transfer form. On August 11, 2020, Citibank was supposed to disburse $7.8 million of loan payments for Revlon, but instead it sent about $900 million of its own money to hundreds of lenders by mistake. It was because three checkboxes needed to be checked on…

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The Mystery of 355/113 (2010)

2022198 points171 comments Math & Algorithms details

Today's date is a good excuse to memorize a few more digits of 3.1415926 53589793 23846264 33832795....