> when the calculator came about, being forced to compute in your head wasn't an advantage. I'm not sure, whether that is true, because when educators want you

> when the calculator came about, being forced to compute in your head wasn't an advantage. I'm not sure, whether that is true, because when educators want you to learn how to compute you are "locked out" of calculators. You don't get to use a calculator until after you learned basic arithmetic and you won't use a CAS when you are supposed to learn calculus.