what are the 3 major transitions?
The three I would pick are:
1. 1980s – 1990s Mainframe to PC
2. 1990s – 2000s PC to Web
3. 2000s – 2010s Web to Mobile
In each of these transitions the software written for the Old Way was incompatible with the New Way.
(There have also been shifts in data storage and network protocols that others might point to as major transitions.)
But we can also invert our perspective and ask: Will there a dramatic shift to a New Way in the next half century? Since 1970 there have been at least 3 major transitions in how people work with technology, it’s easy to imagine more will come before 2070.