A simple example. In the UK I swim whenever I can in a heated outdoor pool in Exeter - all year long and it's great. However the number of signs plastered around the pool that tell us what we can't, mustn't do is quite amazing. I would love to show you a photograph of the place but, naturally I am not allowed to do so, this being nanny state country. [Edit April 20th: The pool is privately owned - see dp's comment]
In Africa I swim in an outdoor hotel pool. There is not one sign around the pool. But guess what, I don't actually need a sign to tell me which end is deep and which is shallow! And as I am a responsible person I know that I should only dive in to the deep end. Back in the UK, of course, I am not allowed to dive at all!
And, naturally, I can show you a photo of the pool: