We can certainly say that the older man was very consistent with his madness. There are so many incidents in the story that clearly show that he was somehow mad. When the two went to the barber, he was watching the stance boy there and noticing him. He never shaves his beard; when his wife died, he was a very big smoker, and he thought it would help heal. These points prove the consistency of the older man.
What is the Planning Process?