I have a theory about this. It’s often said that technologies only become really influential when they become pervasive - when everyone has a car, when every gadget has a microprocessor, when we can use smart materials and RFID chips and wi-fi connectivity in things so cheap and generic that they’re practically disposable.
But when a technology becomes pervasive it also becomes invisible - you don’t have an Electric Motor in your house, driving all your labour-saving gadgets, you have umpteen little motors, most of which you never think of. You don’t have a Computer, controlling everything from the fridge thermostat to the home theatre, you have a hundred microprocessors, most of which you never consciously realise are there.
My theory is that innovation itself has become pervasive and invisible - there’s lots of it going on, but it’s dispersed into (individually) minor, incremental changes hidden inside familiar boxes. So while change is happening, there are no obvious Big Changes to praise/blame for it.
People talk a lot about the impact of the internet - but proving any economic return on the billions Western companies have poured into computerisation over the last generation is annoyingly difficult. Automation has gone slower than predicted - pick up a popular futurist book from 50 years ago and it’ll tell you that the polyester bodysuits and flying cars and personal jetpacks of The World of 2000 will be made by robots in 100% automated factories with perhaps a few technicians looking at dials in the control room. Outsourcing has been driven less by the Internet than by cheap, reliable long-distance telephony and container shipping - it doesn’t matter how cheap you can make something in China, if it costs more than it’s worth to get it to market. And the driving force of geopolitics, for the first time in centuries, is not the “advanced” countries streaking further and further ahead, but the rest of the world catching up.
And yet, as msmith537 points out, the work environment has changed beyond recognition in the last generation. I’m 40 - when I did my PhD (not my school homework, my PhD), I was still plotting graphs on graph paper, with a pencil.
What was the biggest new political idea in the last 30 years? The biggest new social idea? Whatever answer you come up with, it’ll sound pretty trivial to people who lived through Fascism, Communism, Civil Rights, the Counterculture, the New Deal, Prohibition, the Cold War, the Welfare State… but society has changed. And there’s no Big Reason to point to when you try and work out why your home town doesn’t look the same any more.