@Engineer i do not want to get political, especially in context of ukraine, but russia is very well known to have the best hackers and great scientists(china too). so i can hardly take such a simplistic chart seriously.
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@Engineer i think that chart most likely was measured in US schools, so with foreign students, and the tests included knowledge taught in US schools where US students had advantage in knowing it or knowing it better compared to foreigners that might have not know it or had insufficient time to learn it sufficiently. as always, read the fine print of the study, not some tweet.
