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IT is still in the steep upward curve of the innovation cycle, where internal combustion engines were in 1910 or aircraft in 1930 or where small arms were in 1880.
Eg., in warfare computers have important applications(*), but soldiers are fighting with small arms and artillery invented 20-60 years ago. The standard US heavy machine gun was invented in 1919 (two years after my grandfather was gassed at Passchendaele)... and nobody has ever been able to build a better one. Soldiers still carry about 80 pounds of gear and fight at about the ranges they have since the introduction of smokeless powder and magazine rifles in the 1890's.
In 1919, a 93-year-old weapon (which is how old the .50 Browning is now) would have been a smoothbore flintlock. We have somewhat better automatic weapons than they did in 1919; in 1819 they didn't have anything but single-shot muzzle loaders, of types which hadn't changed much in 200 years.
(*) what computers do is mainly reduce uncertainty and increase accuracy. Guns and rockets haven't changed much in generations, but precision guidance makes them much more effective. So does something like computerized manufacture of lenses, which enables them to be used instead of iron sights by ordinary soldiers.

They start slow (Babbage to Eniac, or Newcomen to Watt) then take off, go through a phase when it looks like they're going to hit the moon and "revolutionize everything forever", then level off.
The low-hanging fruit is plucked, and the Law of Diminishing Returns sets in. Adding capability becomes harder and harder and more and more expensive and eventually not worth it.
The technology may still -spread- and cause the same sort of changes in less advanced places as it did in the one it was developed in, but it's become "mature", ie., changes only slowly and incrementally.
Science fiction's typical mistake is straight-line extrapolation of the upward part of the S-curve.
Eg., SF from the 20's on is full of astonishingly big, fast aircraft/rockets.
And if you extrapolated the curve of maximum speeds in 1920-1960, we'd have interstellar FTL by now. But we don't. We have air transport very much like that of the best practice in the 1960's, just more of it. SST's belly-flopped.
All those Great Big Heinleinian Rockets. With navigation by slide rule... 8-). Or the steam-powered-everything projected in the Victorian period.
Add in Historical Compression Effect. People tend to think of their own lifetimes as bigger than the same amount of time in the past; but ten years has always been a long time in human terms, fifty years a very long time, and a century effectively "forever".
Innovation, whether technological or political or social, occurs in discrete "bursts".
It's punctuated equilibrium, not the Whig version of forever onward and upward faster and faster.
The period between the 1750's and the 1950's saw more "bursts" at the same time than any period before or since. I strongly suspect that that's about over, apart from the geographical spread of the "clutch" of innovations from the more to the less advanced nations.
Our lives are much more like those of 1960 than 1960's were like 1900 in fundamental respect; in 1960 my family was living in a suburb. In 1900, they were all farmers and fishermen.
The gap between no phone and phones is greater than that between phones and smartphones; the gap between a guy on a horse and a telegraph is greater than anything since.
Many other technologies like cars, guns and aircraft haven't much changed at all in my adult liftime. We are not traveling to other solar systems, we don't have flying cars. The plane I flew to England in in 1964 travelled at almost exactly the same speed as the one I flew to England in in 2013; the main difference was that the people were bigger and the seats were smaller.
Or to deal in centuries, there was much more change between 1814 and 1914 than between 1914 and 2014.
In 1814, Chicago was a swamp where fur traders passed through, the fastest way to send a message was by horse, and Napoleon was defeated by armies using weapons invented in the 1600's.
In 1914 you could send messages instantaneously around the world, land travel was about as fast as it is now, and all the places in the US that are big cities were already big cities.
Much of the change that's occurred between then and now is a matter of geographical spread -- China is building railways now because thney didn't in the 19th century. Peasants are crowding into factories and their children are learning to read. Haven't I seen this movie before?