"There is great peril in the wilderness."
"Yes."
"There have been cases where men have lost their lives and their deaths have not become known until many years afterward."
"That is true, lad, and I have calculated for that."
"You have?"
"Yes."
"How?"
"You will know if such an event should occur. In the meantime let me tell you if a year should pass and you do not hear from me you will know that I am dead."
"And then?"
"Tell Amy."