alt Hacker Newshttps://en.wikipedia.org/wiki/Cotton_gin
>This inadvertently led to an increase in the use of slaves. Whitney had hoped his invention would do the opposite by reducing the amount of labor needed to process cotton, but he never invented a machine to harvest cotton. That job still had to be done by hand. Cotton harvesting machines did not show up until the 1930s. So as cotton farmers expanded their plantations, they bought more slaves to pick the cotton.
Yeah this is exactly what comes to mind when I think about new tech and productivity increases. I remember learning about this as a kid in history class and it's still relevant today.