Nickles for Tooths

I've been reading the book "Rant", written by Chuck Palahniuk (Fight Club, Choke, etc.).
The whole book its a compilation of interviews with several people who knew the main character.
I haven't finished the book yet, but i found a article by a character rather interesting.
I speaks about some child myths, like the tooth fairy.
I'll write it down...

From the Field Notes of Green Taylor Simms (Historian):
In Africa, people don't believe in the Tooth Fairy. Instead, they have the Tooth Mouse. In Spain: Ratoncito Perez. In France: La Bonne Petite Souris. A tiny, magical rodent that steals teeth and replaces them with spare change.
In some cultures, the lost tooth must be hidden must be hidden in a snake or rat burrow to prevent a witch from finding and using the tooth.
In other cultures, children throw the tooth into a roaring fire, then later, dig for coins in the cold ashes.
By first believing in Santa Claus, then the Easter Bunny, then the Tooth Fairy, Rant Casey was recognizing that those myths are more than pretty stories and tradition to delight children.
Or to modify behavior. Each of those traditions ask the child to believe in the impossible in exchange for a reward. These are stepped-up tests to build a child's faith and imagination. The first test is to believe in a magical person, with toys as a reward. The second test is to trust a magical animal, with candy as the reward. The last test is the most difficult, with the most abstract reward: To believe, trust in a flying fairy that will leave money.
From a man, to an animal to a fairy.
From toys to candy to money. Thus, interestingly enough, transferring the magic of faith and trust from sparkling fairydom to clumsy, tarnished coins. From gossamer wings to nickels...domes...and quarters.
In this way, a child is stepped up to a greater feats of imagination and faith as he or she matures. Beginning with Santa in infancy, and ending with the Tooth Fairy as the child acquires adult teeth. Or, plainly put, beginning with all the possibility of childhood, and ending with an absoulute trust in the national currency.