A heavier reliance on community lasted a helluva lot longer than just the first half of the 20th century. Radio and television didn't provide any real demarcation from the way people were leading their lives. You have to remember that for the longest time there was no cable television. You had, if you were lucky, channels 4, 5, 8, 11, 13, and possibly some UHF like 27, 33, and 39. Meaning, there wasn't shit on television. I don't even remember my family even having basic cable until at least 1983-85ish. So what I'm saying is, you don't have to go all the way back to radio, the world was essentially the same even after the advent of television. Everything changed in society when computers and specifically cell phones began its march towards becoming ubiquitous. Even in the 1980's a common week would be work, go out, work, go out all week then on the weekends go to the local lake and drink beer with a group of people or something similar, but always out and always with groups of friends or family. I can't ever remember being home in the 1980's man. There was no reason to be home unless you were going to sleep or eat. Everything really began to change from 1990 to present, so it happened quickly, in about 25 years. I would say at least 90% of the 20th century was an entirely different reality than what we are experiencing now. Only the last 10 years of the century did I notice any difference in what people did as far as interaction and being around people all the time.