We teach kids in the hopes they will be more able to verify truth or falsity when they can't do the hard work themselves. This is why black boxes are deprecate

We teach kids in the hopes they will be more able to verify truth or falsity when they can't do the hard work themselves. This is why black boxes are deprecated in schooling, until the point comes when we believe the students understand enough to be able to verify truth or falsity, at which point we let them use black boxes so that they can learn more. But still, when they are using those black boxes to learn more, we're keeping them from using a black box of the "more". Again, in the hopes that they'll understand the "more" enough to be able to verify the truth or falsity of the results of that "more". Once they can do this, they've hopefully graduated, and are free to use a black box of the "more". Use black boxes from the get-go and no one realizes that soylent green is people. Or that the Morlocks feed on the Eloi.