Today many people think that the next 50 years are likely to be totally different from the previous 50 years, but would some one in 1300 think 1350 would be an outlandishly different time? If not when did the concept of large scale change over time become popular?

by Ramartin95

the years given were just pulled out of a hat, I don't care so much about specific dates as I care about the transition from the future will be the same as the present to the future will be new.

Aithiopika

Hi - although it only touched on parts of your question, you may be interested in my answer to this related question.