Typed Words, Loud Voices

"I'd like coffee, please." "No. I don't believe you. How do I know it is really you who wants coffee and not your friend there subliminally transmitting that to you by touching your shoulder?" Imagine a world where you had to prove you knew your own mind even to get a cup of coffee, where it was generally assumed that you could have no thoughts of your own, so if you did express your thoughts, it must be some trick. What would you do? Would you give up, or demand to be heard? Sadly, this wo...