What makes the man change his mind about the wisdom of the advice he was given?

The "old-timer" in the story gives the man a very important piece of advice that he chooses to ignore. According to the old-timer on Sulphur creek, "No man must travel alone in the Klondike after fifty below." This was for safety's sake. When conditions are that cold a man can die very quickly should anything happen.

Explanation:

dose this helps

you can infer that to folke dude was spying for allied nations

answer: "the beating heart symbolizes the narrator's conscience, or his sense of guilt and wrongdoing" so its b

explanation:

"to look at him, or hear him describe it, he had no guilt. however, poe decided to symbolize this man's subconscious guilt through the heartbeat."