In a hypothetical world with no privacy and perfect information I'd just make my nuclear launch system (which also has perfect information) only launch when the

In a hypothetical world with no privacy and perfect information I'd just make my nuclear launch system (which also has perfect information) only launch when the right people ask them too. You can't pretend to be those people because you can't lie because the launch system would know because there's no privacy. I don't know of any way to actually implement this in practice -- there probably isn't one -- but it's an interesting thought experiment. It's possible that privacy isn't a moral right and perhaps isn't necessary at all. The argument for privacy seems to be predicated on other people being immoral. If you could identify immoral people 100% accurately then perhaps the need for privacy goes away. In fact, if that were the status quo you might claim that keeping something private is immoral.