Technological Change

I would say the world was much more transformed by technology in the 60 years from 1900 to 1960 than they were in the 60 years from 1960 to 2020.

Imagine a time traveller from 1900 arriving in 1960.  He would be overwhelmed by all the changes.  Now imagine a time traveller from 1960 arriving in 2020.  I think he would be disappointed!