Women's lives were transformed by sewing machines, which made a "never-ending, ever-beginning task" far less arduous and time-consuming. But Isaac Singer, who made his fortune from these devices, was far from a champion of women's rights. Tim Harford tells a story of how self-interest can sometimes be a powerful driver for social change.
Hollerith punch card
Data is a hugely profitable commodity - if you know how to process it. Tim Harford tells the story of Herman Hollerith, and how his 19th-century machine for processing census data laid the foundations for some of the world's most valuable companies.
In theory, stock options should motivate executives to perform better by tying their pay to their company's performance. So why do some argue the practice has just become a way for the highest earners to boost their salaries even further? Tim Harford turns to ancient Greek philosophy and Bill Clinton's presidency in search of the answer.
Tim Harford goes back to the 1900s to tell the story of how charity fundraising became big business. But in the social media age, what's the most effective way to get people to give?
The Society for Worldwide Interbank Financial Telecommunication - SWIFT - solved some big problems with international financial transfers, making them more secure and reliable than ever before. However, as Tim Harford explains, the global political climate means it might now be facing its greatest challenge.