also also your version is now slightly ambiguous since it is not clear whether froderick is speaking twin earth english or english if he is speaking english and just happens to be on twin earth ie if he is frederick's identical earth twin and has been transported there unbeknown to him then the context is not enough or may not be enough there is i believe some debate about this point to change the meaning of his words and so his words may mean the same as frederick's that is why the point was made explicitly in my last version