The most important element necessary for any tradition to flower is repetition. We celebrate annual events each year the same way we always have. Over time the repetition becomes codified, and any deviance from the norm is dealt with. Imagine the December holiday season without multiple airings of Frosty, or the Christmas Carol.
Harder still is to imagine a holiday season without airing reruns of my favorite holiday posts. In real life its called regifting. I hope you this one makes you smile.
3 hours ago