There are certainly mathematics competitions, where humans (usually high-school or college-age students) participate and cheer on other humans who are artificially restricted from the use of a calculator. And these competitions are considered useful because the skills required to do well on them are very valuable in certain industries, even if the artificial restriction on calculators is removed. In fact, some of the companies that most aggressively hire people who perform well at these competitions are also well-known for automating accounting tasks that were done by humans until recently, such as determining the expected price of a stock.
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There are certainly mathematics competitions, where humans (usually high-school or college-age students) participate and cheer on other humans who are artificially restricted from the use of a calculator. And these competitions are considered useful because the skills required to do well on them are very valuable in certain industries, even if the artificial restriction on calculators is removed. In fact, some of the companies that most aggressively hire people who perform well at these competitions are also well-known for automating accounting tasks that were done by humans until recently, such as determining the expected price of a stock.