user
Given a cartoon image and a caption. Caption: Free will is overrated. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
This couple looks normal, except for the fact that they are controllable like marionettes using the lines attached to them. They seem happy: they enjoy being controlled (by an unknown puppeteer) and having no free will. This joke plays on the idea that free will has downsides: making decisions can be difficult.