I was so disappointed with the thread title. I was expecting something rather different.
Seriously though, it depends. In the last 50 years we've made a quantum leap in technological advancement. Same thing happened with the Industrial Revolution. Something happened and suddenly things got so much more advanced in a rather short space of time. We don't know what the next life changing discovery will be, or how much it will change our world. Sure, we are seeing a lot of new things now, but many of them are the next logical step from the big event.
So you have to decide: did your world get there by continuously following the next logical step throughout history, or was it interspersed by great leaps in technological discovery an growth? The former would almost certainly take a lot longer than the latter.