1950's SC-FI would give an insight into the technology mindset of the time and what they expected in the future then. Or could ask any number of the 62 year olds today online. But if you suddenly transported a person from the 1950's into today then technology would be the least of the area's of todays society for them to get there heads around. Object size and small computers would be one and one which would they would appreciete would be the size of radio's and general media quality as back then there was still in the valve days with a populas at not aware of any changes on that front. This along with general building of anything and the big is best mentality being the fashion of the day.
I also think that it is supprising what technology they would expect and what we actualy have today at consumer level. They would be expecting robot servants and a automated house.
Youtube has a 1957 house of the future video that is worth a watch if you want a better answear of the times http://www.youtube.com/watch?v=VowfYuhx1-o
a google picture or article search on "1950s home of the future" brings up much more of the period articles of the time.
I think the first thing somebody in the situation of comming from 1950 into today suddenly would ask is "so are the cars not flying", why do the houses look smaller and not much different and in many area's will be asking is that it, oh.
So sadly as a whole the vision from the 1950's is still in many area's the vision today.
Probaly the only area which has lived upto expectations would be car production assembly lines with robots, they did love there robots of the future in those days and we still do aspire and love them today.