A Norseman would be disgusted at the way his descendants have gone.
A Muslim would be disgusted with how his descendants have gone.
A Christian would be disgusted with how his descendants have gone.
All in all, they'd be very disappointing with the sheer extent of failure this generation has under its belt.
He would be blown away by the increase in standard of living for the average person. Then in about 18 years he would completely take it for granted and start protesting for more.
Why not? These people weren't stupid. It would take a little while to get used to all the new technology but that's about it.
Well, it's not like YOU understand how a smartphone works exactly either. I mean, all the technical details. So why should this person be any different?
I would imagine that he would assume we were all demons given our technology. People moving around inside metal monsters, flying, seeing other people through "portals" (tv's), speaking to people who are no where to be seen (cell phones), ect..
He'd probably be like WTF and people would think he was crazy or an idiot, probably. These days, if you don't know what the internet is, you're a redneck. If you haven't been to Facebook, you obviously are outdated or living in an old, primitive world!
"In order to maintain a tolerant society, the society must be intolerant of intolerance." Paradox of tolerance