Jack sat around and had to ask himself the obvious: was he just cantankerous, or was he going nuts? To speed the answer, appealed to the shelf where liquor bottles copious, he wasn’t such a populist that he couldn’t drink alone. The answer came out clear as night (because he sees clearer when it’s not bright) on the bathroom floor flat on his face—but the bathroom rug’s the softest thing in his place. It’s not the thing a normal guy would do, but given the options they would have picked that rug, too. His choices all make perfect sense when they are placed in their proper context, and sanity is only relative to the way you set the place you live.