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“A lot of [TI’s] graphing calculator success was due to really aggressive lobbying for certain policies,” a source in the education space told The Hustle. “They made it so that that the types of things you were allowed to bring into a test were essentially limited to their devices.”

https://thehustle.co/graphing-calculators-expensive/

And this step might be the reason why they do this now to make it impossible to cheat by using them with custom software. It provides them an argument why students can continue to use them on the tests.






And simultaneously remove old versions from the re-sale market that they have to compete against, since of course, they aren't secure.



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