7. A problem about Dr Gustav Lauben:Suppose further that Herbert Garner knows that Dr Gustav Lauben was born on 13 September 1875 in N. N. and this is not true of anyone else;suppose,however, that he does not know where Dr Lauben now lives nor indeed anything else about him. On the other hand, suppose Leo Peter does not know that Dr Lauben was born on 13 September 1875 in N.N. . . .Herbert Garner does not associate the same thought with the sentence ‘Dr Gustav Lauben was wounded’ as Leo Peter wants to express with it.