The first industrial revolution: agriculture since the calendar.
The second: the steam engine since the mathematical zero.
The third: the IT and the computer.
The fourth: after the tower of the Babel, development/progress to new dimension since the life/existence zero.

The links:

For The Fourth Industrial Revolution (2).
https://kyonissho.com/kyos-blog/blog/2021/11/28/for-the-fourth-industrial-revolution-2/

For The Fourth Industrial Revolution (3).
https://kyonissho.com/kyos-blog/blog/2022/04/20/for-the-fourth-industrial-revolution-3/

(C) Copyright 2021 Kyo Nissho (Kiyom Nishio). All rights reserved.