1904 Vacuum-Tube invented 1961 IC invented 1974 personal computer 1983 internet 1998 g 2004 f On average 20.6 years between the innovations I listed. Con

1904 Vacuum-Tube invented 1961 IC invented 1974 personal computer 1983 internet 1998 g 2004 f On average 20.6 years between the innovations I listed. Consider that since the inception of BTC (and ETH) there might not have been any actual innovations that would fit this rubric.