The Supreme end of education is expert discernment in all things -- the power to tell the good from the bad, the genuine from the counterfeit, and to prefer the good and the genuine to the bad and the counterfeit.
Donne, I suppose, was such another / Who found no substitute for sense. / To seize and clutch and penetrate; / Expert beyond experience.
I am not really an expert on the energy problem,
A genuine expert can always foretell a thing that is 500 years away easier than he can a thing that's only 500 seconds off