My point was meant to illustrate that the changes which human life have been going through have been becoming more and more profound

I don't feel my life changing profoundly. In fact the only major change in my lifetime was computers/cellphones/Internet. We're mostly over the hump of that change now (quick, name some revolutionary advances in the last 5 years), and anyway it's tiny compared to electricity or cars. Roughly comparable to telephones and TV, at most. (It would be crazy to claim that a mobile phone is further from a regular phone than a regular phone is from no phone at all, ditto for Internet versus TV.) Do you have this feeling of accelerating change? What are the reasons for it?