not really true b.c the leaps we made in 20 years will probably never happen again. 20 years from now, I don't see nearly as catastrophic of improvement
Well hopefully we don't have many catastrophic improvements.
That said, the pace of change seems to be pretty steady. Someone in 1992 could have looked back at the previous 20 years and made similar comments. In 1972, "computers" were still big monolithic devices in specially cooled rooms that were accessed by dumb terminals. We didn't have ATMs or cellular phones, or VCRs. Cars were inefficient and not very safe. By 1992, all that had changed. We had 4-5 lb notebook computers capable of running Windows 3.0 or System 7. Cellular phones, while not ubiquitous, were no longer novelties. Recording TV shows for later was well established, cars had gained airbags and ABS, and we started seeing clues of what was to come (e.g. services like AOL were getting started, pagers were broadcasting real-time sports scores, there was talk of thin-screen TVs and video discs).