Future would be rough with a near complete lack of knowing current cultural norms, lingo, history, and knowing how the three seashells work. Top that off with all the stuff developed in just the past 100 years vs. the amount of progress we could be making in 5 times that length of time, and I feel like the future would be a lot rougher then the past.
In the past you could excuse a minor faux pas by saying you didn’t get off the farm much and maybe folks would just think you were a bit slow. Not being socialized in the present or future? Bit less reasonable.