Comment by alnwlsn

The whole of the 20th century was pretty fast. There were no vacuum tubes in 1901; by 1999, 15 million transistors on a chip. Plus spacecraft, refrigerants, airplanes, CFCs, antibiotics, nukes, plasics, radio, lasers...

It was a real "move fast and break things" time period. We'll probably never see anything close ever again.