The question was "name a generation over the last few centuries which hasn't seen the birth of a dozen groundbreaking technologies."

Notice the part about "last few centuries"?

12 is more than a few. If you're going to bend the rules then so will I. :)

The development of adobe building technology is both literally and metaphorically groundbreaking. These are still known as the pueblo dwellers because of that technology.

A new writing system and a new banking system are also technological developments.

My thesis is that social impact of the technological developments in the 50 years around 1900 was more than the development of the last 50 years. As supporting evidence, I propose that return0's statement "how often can one live through the birth of a groundbreaking technology" reveals that there are not that many new groundbreaking technologies these days. Someone from 100 years ago could name a dozen such changes.