You Had to Be There
Etcetera. You are welcome to peruse
It is obvious that most of the relics of earlier eras that stick with people are technological, or at least about the material culture of technology.
It is banal to note that these technological eras are becoming shorter. No one expects today’s social networks or electronics to last as long as AM radio or the internal combustion engine or even three-channel broadcast television. That’s not how products work anymore. Many things are designed for obsolescence and the rest end up there anyway with frightening speed.