The point is, “if a technology exists, you cannot tell people to not use it” is a <i>terrible</i> argument for anything.<p>We restrict people’s use of technology in all sorts of ways to protect the basic order of society. For instance we restrict people from driving 150mph rocket cars or armored tanks with cannons on residential streets, we disallow radio jammers, we carefully regulate access to radioactive material, we don’t let unlicensed doctors implant untested medical devices, and so on.<p>More generally, gun control is almost entirely irrelevant to encryption. It’s an emotionally charged non sequitur which derails the discussion.