Maybe not the average butcher or baker, but to engineers and scientists it was incredibly important. The slide rule was invented just a few years later based o

Maybe not the average butcher or baker, but to engineers and scientists it was incredibly important. The slide rule was invented just a few years later based on Napier's work and was used continuously for the next 350 years, until the invention of the modern calculator/computer. I don't think I disagree with your overall point I just think you chose the worst example :)