We propose here to make the connection between the definitions given by Turing and Wittgenstein about what it means to follow a rule. It will be here a presentation of the Turing test in order to observe that humans and machines have more in common than one might initially believe when it comes to interpreting signs. We will see that both encounter a decision problem. For that, we will come back to the definition of the concepts of forms of life and language games from Wittgenstein, in order to see how we can apply them to a Turing machine.