"This speaks to the result of playground injuries increasing despite increased supervision - kids aren't actually getting to spend enough time playing in the physical Arena, their capability to navigate it is underdeveloped because of excess indoor time and excess supervision."

Anecdotal evidence from yoga and movement teachers would offer tangential support for this. They describe in children (and adults!) a trend to reduced somatic intelligence, core strength, proprioceptive awareness, and ability to assess risk.

Not that I'm aware of.

Loving your enthusiasm (do not read any condescension into that statement). I wish it was shared by a majority of medical students. .

Speaking as a surgeon I would like to stress one nuance; you are operating on a preserved cadaver. The tissues of a living person are indescribably more delicate and beautiful.