Never knock on the door of the old RV next to campsite 42

Never knock on the door of the old RV next to campsite 42. Not even if things start to look really bad and you think the storm might be more than a little too much for you to handle. Even if you notice the lights inside are on and respect is to be given towards those who have been inside for years. <br><br>Is there a reason given why the old man in the RV next to campsite 42 is given that particular number as his campsite?