Time changes everything
A puppet is looking down to the right. What is it thinking? Well if you ask the audience, what it is thinking changes with time passing. First it is thinking "What is that over there?" Then, without the puppet doing anything at all, after a half minute or so it is now thinking, "Maybe I should have a closer look". You don't have to do anything. The thought changes with time. Now the puppet can walk towards it if it wants to.