This could aid the development of false identities like the spies do, lie about everything, who you are, who you work for, where you live, who are your associates, who you hurt, who you steal from, where you go around the world, what laws you break around the planet, what you withhold from overseers, with totally deceptive and legitimate-appearing documentation, all fully government-approved to deceive the enemy, indeed, the legion of enemies doing exactly the same thing require that absolute suspicion is necessary. Two or more worlds, both believable and unbelievable by the paranoid standards of the day, with god and the devil seeing through the pretenses of the faithful and the unfaithful, everybody pantopicizing everybody else, comforted in their blind faith that only they know who is who, that nobody ever tells the full truth except under direst of threat, that is tell the lies you want to hear, proving your suspicion is warranted. Liars breed liars, and that is precisely what law enforcers desire to perpetuate their version of reality. Nobody deceives more than those in authority, nobody demands more that they be trusted to do the right thing by hook or crook -- forever in the public interest and in secrecy. Well, nobody except the lowest on the totem pole, godless, unafraid of the devil's worst, without scruple, happily invisible, unknown, down and out. Born to spy.