1. Which were the central innovations around the General Purpose Technologies of the first three industrial revolutions? Electricity, coal and the internet Iron, steel and computers Oil refineries, combustion engines and electricity Steam engine, internal combustion engine, and the microchip 2. What is "the fear of technological unemployment" Fear that technology will increase the length of the working day Afear that unemployed people will have to work with technology Fear that technology will create unemployment Fear of over-investments in unused machinery