The other minds skeptic supposes there may be no minds other than his. The external world skeptic thinks there could be no world external to him. Some philosophers think a person can refute the skeptic and prove that his world is not the solitary scenario the skeptic supposes his could be. In this paper I examine one argument some people think refutes solipsism. These people appeal to the Wittgenstein thesis that it is impossible for there to be a language only one person understands. I show people do not refute the skeptic with the Wittgensteinian, language-necessarily-is-shared principle.