Environmental collapse and the price of steel! I think people forget just how expensive metal was. Carpenters would lock up their saws because the blades were so precious. People knew how to make cheaper steel from coal for a long time, but it was regarded as an inferior product and avoided. However, charcoal is labor intensive stuff to collect. By the 1700s, some cities in Europe had so depleted their available fore…
Imagine if you were living in this period - England was constantly at war, the trees had all run out, and quality metal was nowhere to be found. You would think you were in the late stages of humanity, not at the cusp of the greatest moment of human progress. Also, if we wanted to go back even further, the true roots are probably the Enlightenment. Before Wilkinson and Watt and Darby could think to develop technology…
So which great invention is just around the corner now?