Ebbinghaus’s “Forgetting Curve” – a classic study that illustrates how much information students lose when there is no effort to retain it. Boiled down to the essentials, the study concludes that students lose more than half of what they learn within an hour; two-thirds within a day; and three-fourths within six days. Educators have been wrestling with these results since the study was conducted 140 years ago.
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Mitra sees technology opening the door to a new way of learning built for the Fourth Industrial Revolution. “This means we no longer have to teach students what they can learn by themselves with an Internet connection. Instead, we can facilitate problem-solving skills and encourage critical thinking by asking interesting questions and letting the students find the answer on their own.”
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... knowledge becomes obsolete faster than ever...

I don't see anything in the quote above, which stresses problem solving rather memorization (the lack of which a number of people have moaned about for at least a century -- yes, I have vivid memories of my grandfather critiquing the educational standards of 40 years ago, back then it was the fact that we did literary analysis rather than memorizing pages and pages of poetry, ideally in Greek and Latin) that would preclude future humans from learning routine mathematical computations (or master reading and writing). And if you want traditional, the expectation that everybody should be able to is a fairly new development in the history of humanity and civilization.

But your worries are not new: https://en.wikipedia.org/wiki/The_Feeling_of_Power

My take on this: the ability of humans to extrapolate future from past and present has been (and remains) pretty poor.