An aside: to say we should use technology build to better sound insulation is one thing, but first we have to build at all, which some American cities cannot ev

An aside: to say we should use technology build to better sound insulation is one thing, but first we have to build at all, which some American cities cannot even manage. This old 1920s-built 3 bedroom 1 bathroom unit I live in rents out at $3500/mo. Renovation is vastly cheaper than demolition/reconstruction (assuming such a thing could even be approved).