GT, say what you want about whether fans turning the beer labels towards the pitch causes a positive force field, but you can bet that a sizable portion of the players in the 49ers locker room will be thinking or acting superstitiously before and during this weekend's game. It goes back to what Veblen said about the link between sports, force, fraud and the appeal to luck. And while you might not believe in the Sheldrakean effects of fan psychology, there have been scientific studies showing that superstitious behavior has positive effects on players:

Psychological Benefits of Superstitious Rituals

This kind of work is related to the studies on patients who have been "prayed for", or know they have been prayed for, versus those who haven't.

Modesty restrains me from also linking to my extensive research on the ballistic properties of dead cats vis a vis the betting lines of NFL match-ups.