21st
The web is a perfect example of what engineer and early computer scientist Vannevar Bush called “intelligence augmentation” by computers, in his 1945 article “As We May Think” in The Atlantic. He described a future in which human ability to follow an associative knowledge trail would be enabled by a device he called “the memex”. This would improve on human memory in the precision of its recall. Google is today’s ultimate memex. (…)
This is man-computer symbiosis at its best, where the computer program learns from the activity of human teachers, and its sensors notice and remember things the humans themselves would not. This is the future: massive amounts of data created by people, stored in cloud applications that use smart algorithms to extract meaning from it, feeding back results to those people on mobile devices, gradually giving way to applications that emulate what they have learned from the feedback loops between those people and their devices.” ”

“As fast as we remake our tools, we remake ourselves. We are co-evolving with our technology, and so we have become deeply dependent on it. (…)
Our human nature itself is a malleable crop that we planted 50,000 years ago and continue to garden even today. (…)
Homo sapiens is a tendency, not an entity. Humanity is a process. Always was, always will be. Every living organism is on its way to becoming. (…) The technium and its constituent technologies are more like a grand process than a grand artifact. Nothing is complete, all is in flux, and the only thing that counts is the direction of movement. (…)
Technologies are like organisms that require a sequence of developments to reach a particular stage. Inventions follow this uniform developmental sequence in every civilization and society, independent of human genius. You can’t effectively jump ahead when you want to. But when the web of supporting technological species are in place, an invention will erupt with such urgency that it will occur to many people at once. The progression of inventions is in many ways the march toward forms dictated by physics and chemistry in a sequence determined by the rules of complexity. We might call this technology’s imperative.”