It's hard to quantify change. We keep hearing about the accelerating rate of change, but there are many dimensions along which change can occur. For example, f

It's hard to quantify change. We keep hearing about the accelerating rate of change, but there are many dimensions along which change can occur. For example, for a long time the maximum speed of travel for us humans was that of a horse, or a horse-drawn carriage. Then all of the sudden we had a steady climb, with appearance of the train, then cars and planes, and that curve seems to mostly have flattened in the meanwhile. Similar for the maximum weight we can lift - see the Saturn V rocket. But these are all brawn as oppesed to brain type capabilities. Which have to do with our physical aspect. It is normal that they plateau since the laws of physics set hard limits on these type of parameters. And they are also much more obvious since they directly impact the physical world all around us. My feeling is these days change is tilted more and more towards the informational aspect of us humans and the world. The quantity of scientific data gathered, books written, new media types, information technology, the internet, genetic engineering, wikipedia all function at the much more subtle level which wouldn't be as immediately obvious to an outside observer, but they actually affect us much closer to our core, because what makes us distinctly human and the source of our power is all about this dimension - which the philosopher Teilhard de Chardain has called the noosphere.