Skipped 4th floors and jumped hospital rooms are mostly a sound taboo: 四/死, Korean sa, Japanese shi. Probability does not change. Western skipped 13ths show that “unlucky numbers” are cultural, not universal.
Homophones drive feeling. Cantonese speakers may avoid 4 especially. In other languages 4 is an ordinary even number.
Omitting 4 can be a product choice for residents. It is not structural science.
8 is loved because it sounds like “prosper.” Preference and avoidance are paired superstitions, not physics.
Renaming numbers is often costlier than simply using 4 calmly.
For entertainment and cultural context. Luck, saju, and angel numbers are not prediction, finance, or medical advice.