A closer look

The bedrock of modern corporate anxiety was laid down by a monk who just really liked doing math. Luca Pacioli, a Franciscan friar in the 15th century, codified the double-entry accounting system that balances every debit with a credit. He didn't just teach the system; he also tutored da Vinci. Every single mind-numbing spreadsheet and corporate audit you sit through today exists because this guy decided Renaissance merchants needed to be organized.