/ Let's talk about Sweden and other Scandinavian countries
As a matter of fact if maths are properly taught to a child from the age of three, they can complete all the basics of arithmetic, algebra and geometry including theorems by the age of twelve.
I call BS. Please show me a proof of an average ordinary kid solving General Relativity Theory and Quantum Mechanics equations at the age of 12 or even 16. Im waiting.
Additionally i have read the articles i LinkedIn before. In the system they propose young humans after the age of 16 wont be taught maths and physics at all. Theyll end up in a group simulation of for example a coffee house business. They will be taught no Theory but just applying it to Real situation. Thats why i said there will be no possibility for another Einstein, Planck or Nils Bohr to emerge from system like that. Those people will become business owners, workers etc.