You don't know that a group is free of spies, but a group is less likely to have a spy than the current setup whereby pervasive, omnipresent surveillance is fac

You don't know that a group is free of spies, but a group is less likely to have a spy than the current setup whereby pervasive, omnipresent surveillance is facilitated by WeChat, leading to people needlessly imprisoned and tortured for the thoughtcrime of others.