It’s easy to disprove an equal distribution; however, it’s also very easy to disprove a distribution that closely fits opportunities (say, measured by economic development).
I’d also like to note that IMO performance is a strong but quite noisy signal of top talent distribution, due to some countries’ educational and career systems not particularly caring about it (France comes to mind); some countries kneecapping their performance on purpose (China doesn’t let anyone participate twice), and the cultural importance of high-school competitions varying between countries.
It’s easy to disprove an equal distribution; however, it’s also very easy to disprove a distribution that closely fits opportunities (say, measured by economic development).
I’d also like to note that IMO performance is a strong but quite noisy signal of top talent distribution, due to some countries’ educational and career systems not particularly caring about it (France comes to mind); some countries kneecapping their performance on purpose (China doesn’t let anyone participate twice), and the cultural importance of high-school competitions varying between countries.