If you wanted to work as a banker prior to the adoption of computers you'd need an education advanced enough to calculate amortization tables. Now you'd simply

If you wanted to work as a banker prior to the adoption of computers you'd need an education advanced enough to calculate amortization tables. Now you'd simply need to know where to put the numbers into a spreadsheet. Same for accountant. Attorneys can now run instant searches for relevant case law rather than spending time in a law library. Construction workers have instant access to information on a variety of materials and methods. Doctors have computers giving guidance on diagnosis as opposed to consulting experts. Students worldwide can learn from the best teachers in many subjects. I could make this list much longer. In general, the individual knowledge requirements for most jobs have gone down drastically, and the potential paths to acquire that knowledge have grown.