A man says to his dog, "There are some things that I understand about dogs, but it seems to me that it isn't enough just to know the facts... For example, I know that for each human year, it is the same as seven years for a dog... but the idea of a year and the idea of a day are not the same... so I was wondering, does that mean that one human day is the same as seven dog days?"
The dog says, "Yes... that is true. One human day is the same as seven dog days."
The man says, "Wow, that's great to know. I feel like I understand you better. Is there anything you want to ask me?"
The dog says, "Yes, there is. Why is it you only feed me once a week?"