No one thought that it depends on people's habits, say common social norms? Say in Asia it was commonplace to wear masks even before epidemic and it is consider

No one thought that it depends on people's habits, say common social norms? Say in Asia it was commonplace to wear masks even before epidemic and it is considered polite to stand far away from one another, and people bow instead of shaking hands. Quite clearly there, or say in Sweden with their tradition of having a large privacy distance, R0 is much lower than in Italy where people hug and kiss seeing each other.