However, not all Golden Birthdays are considered equal. Based on an ancient astro-scientological belief said to stem from a Magic Wizard Book crafted during, and as a result of, the Big Bang itself, each number to which ones Golden Birthday lands upon holds different levels of power. Single digit Golden Birthdays are the least potent of the Golden Birthdays, and are generally harmless to those who do not know how to wield the Power. Other relatively harmless Golden Birthday numbers include 27, 28, 29, 30, 17 and 20. The rest of the Golden Birthday numbers vary in Power (If you would like to learn more, please consult the Magic Wizard Book). It is quite important to note, however, that the two most Powerful Golden Birthdays are 31 and 23. While 31 is stable and at a constantly high Power level, 23 is an ever-shifting entity that at times holds nearly infinite levels of Power. This can be dangerous and has the potential to unknown chaos, depending on if the wielder (birthday boy/girl) is aware and can harness the Power.