I was thinking about that when I was dropping my 6 year old off at some hobbies earlier - it’s pretty much expected to have learned how to ride a bicycle before starting school, and it massively expands the area you can go to by yourself. When she went to school by bicycle she can easily make a detour via a shop to spend some pocket money before coming home, while by foot that’d be rather time consuming.
Quite a lot of friends from outside of Europe either can’t ride a bicycle, or were learning it as adult after moving here, though.
edit: the high number of replies mentioning “swimming” made me realize that I had that filed as a basic skill pretty much everybody has - probably due to swimming lessons being a mandatory part of school education here.
I don’t really see that- there’s a difference between a contiguous culture and genetics. If you’re living in western Italy, you might be descended from and still inhabiting the area of the ancient etruscans, but it doesn’t mean you have the same culture. One could make an argument that you’re from the Roman or florentine culture, but you are from a culture that’s younger than etruscan culture.
Aboriginal Australians (I’m not sure about Torres Strait Islanders, so I hope that’s the right terminology) have been practicing elements of the same culture for longer than any other civilization we know about. You raise an interesting point about them now vs them 1000 years ago, but I grew up wildly differently from how my father did, and we’re still part of the same culture. It’s sort of like the question of stepping into the same river twice- the water is different, but it’s guided by the same constraints.