> How else do you solve the problem of unwanted ideas spreading around?
Make the ideas illegal. Ban discussion or propagation of the ideas, including written materials. Set up a strong system of censorship to ensure that people don't try to use irony, innuendo, or sarcasm to evade the information blockade. Ensure that cross-border communication is intercepted and inspected for illegal ideas. If someone is reported for spreading the ideas, search their home and confiscate the illegal materials. Send repeat offenders to prison. Put the creators of the material in prison. Tightly control any and all devices that could be used to spread the information.
(For the record, any country that has come close to achieving this has become a totalitarian state.)
Make the ideas illegal. Ban discussion or propagation of the ideas, including written materials. Set up a strong system of censorship to ensure that people don't try to use irony, innuendo, or sarcasm to evade the information blockade. Ensure that cross-border communication is intercepted and inspected for illegal ideas. If someone is reported for spreading the ideas, search their home and confiscate the illegal materials. Send repeat offenders to prison. Put the creators of the material in prison. Tightly control any and all devices that could be used to spread the information.
(For the record, any country that has come close to achieving this has become a totalitarian state.)