Earlier quoted context omitted.
> Playgrounds for children are a relative new invention, especially for the unwashed masses. The notion that children require a dangerous feeling playground to become well rounded and mentally tough adults is silly. Prior to playgrounds, children climbed trees and did all kinds of other edge-pushing play. Modern urban/suburban (and even in many cases rural) environments provide less opportunity for that.
I know that climate change is getting bad but trees still exist and kids still climb in them.
There's also the issue with who enjoys climbing trees. I can't recall specifically about trees, but I do know girls prefer different activities to boys, another thing my acquaintance focused on when designing playgrounds.
Anyway, my point wasn't that kids need playgrounds to develop properly. Rather, given that kids are forced to spend large parts of their day in areas where the playground is the main source of physical challenges, the design of the playground has an impact on the kids.