[1] https://onluminousgrounds.wordpress.com/2010/09/19/the-creat...
[2] https://hetleadershiplab.nl/inspiratie/donald-winnicottplay-...
He believes play is how we do all simulated learning and by extension is the basis (and mechanism) for all creativity.
A vague connection is made between toys, Descartes and a Pascal quote.
And no mention of toys from ancient civilizations,
https://en.m.wikipedia.org/wiki/Indus_Valley_Civilisation
Maybe this wasn't the goal but why a title that asks a sweeping broad question but gives a weak answer? It sort of makes this article click-baity.
Playing is creativity and learning. It’s how we learn new things we have not been directly exposed to.
Basically we have defined play far to narrowly and it is the basis for all learning/creativity in non-stressful situations. As opposed to learning in reaction to a situation.
toys, and play allow aquisition of schema repetoire to employ during a putative solution in response to enironmental challenges