[evancoop]

How about the sound of children playing outside? The sound of a baseball popping into a well-worn leather mitt still exists, but is becoming awfully rare. It ain't tech, but it's a byproduct of tech.

[kaybe]

It's at least as much a byproduct of bad city planning and car-centric design, I'd say.

[postalrat]

I could be wrong but it seems like it reached it's peak during and immediately after the construction of those cities.