I don't disagree with any of the details in this post (21 page PDF), but I think the numbering system is out of whack. When you have version 1 for everything between the beginning and 2004, and then versions 2, 3 and 4 sandwiched into the time after, the numbering is wrong. Similarly with the "fourth industrial revolution", attributed to Schwab, which compresses two 'revolutions' into the digital age. Meanwhile, we haven't reach a 'web 4' yet, nor do we know that it will be the "symbiotic web". As for "revolution", if we're still talking about "higher education" as part of "education 4", we know that no real revolution has occurred.