lucky underwear vs faith

[Darwinian]

Perhaps the scarf has some meaning to him and simply gives him comfort and security in much the same way that a 'blanky' does for a child.

As Niels Bohr said when someone asked him why he had a lucky horseshoe and if he believed it gave him good luck..

“I believe no such thing, my good friend. Not at all. I am scarcely likely to believe in such foolish nonsense. However, I am told that a horseshoe will bring you good luck whether you believe in it or not.”