the mind > mental capacity > knowledge > conformity with what is known, truth > disregard for truth, falsehood > inaccuracy, inexactness > be defective [verb (intransitive)] > in calculation (3)
intransitive. To count wrongly or erroneously; to miscalculate, misreckon.
intransitive. To miscalculate, make a wrong computation.
intransitive. To calculate, estimate, or reckon wrongly; to misjudge a matter, effect, etc.