Aren't all holiday traditions rather arbitrary? I live in Japan and considered some things odd at first, but usually they are just different but equally valid w

Aren't all holiday traditions rather arbitrary? I live in Japan and considered some things odd at first, but usually they are just different but equally valid ways to do things. This short TED talk from Derek Sivers illustrates it nicely https://www.ted.com/talks/derek_sivers_weird_or_just_different?language=en https://www.ted.com/talks/derek_sivers_weird_or_just_differe...