I wish I had the cognitive flexibility of children and toddlers. Dunno what you are all talking about. Sophistication and experience seem overrated as advanced bullshit detectors have the price of ideological constraints and biases. They create blind spots as large as their alleged effectiveness.
It's debatable whether any of them help in uncovering new foundations, fresh problems, novel approaches, and fruitful reformulations of context regarding some problem in general. That may be a mirage.
I don't think we really know what we mean by intelligence or maturity and if you argue that we do, I don't want any of it. Tell me instead, how to rid myself of such notions. Reading this list helps a bit at times.