The definition of revolution can be found by Merriam-webster (*1) and Google (*2).
We aren't going to talk about astronomy here, we are going to discuss the change.
The one of definitions is "a fundamental change in the way of thinking about or visualizing something".
There are many persons who are on leading positions don't know what the a central or primary rules or principles on the companies they serve. They are like outside managers and they don't want to spend the time to understand the primary rules. They want their departments, companies, software, etc. to change immediately and that's impossible. We are on revolution stage, we have to learn what the fundamental is, and we can change it from what we learn. We are going to become victims of our own bad/evil deeds if we keep thinking we are too best to change.
We start learning and thinking right now and we hope we can save our earth future years.
*1: https://www.merriam-webster.com/dictionary/revolution
*2: https://www.google.com/search?client=firefox-b-1-d&ei=lhAkYJ2MPIGP9PwP36OImAQ&q=revolution+definition&oq=revolution