Cothinking works by creating the illusion that your speech is the other person's thoughts. In this way it is a kind of cognitive ventrilloquism.

To do this, your ./ego needs to be kept at bay, first and foremost. however there are also subtleties of ./language, ../saying-as-little-as-possible and guidelines to how you ./respond-to-questioms that can destroy this illusion if not done correctly.