I don't think so. Laws change all the time, and a society's fears and priorities change over time too. Technology both gives us the ability to archive and ana

I don't think so. Laws change all the time, and a society's fears and priorities change over time too. Technology both gives us the ability to archive and analyze communications forever, and to provably protect (encrypt) them forever. Laws only give us the ability to protect our communication as long as the complex web of human desires and emotions allows it.