After resolving their dispute, the two brothers encountered in Question 3-2 decide to resume their tax-accounting practice according to the terms of their original agreement. Again a dispute arises, and again it is decided by the father (now retired except for numerous occasions on which he acts as an arbitrator) in favor of the older brother. The older brother files a petition to enforce the award. The younger brother seeks to set aside the award and offers evidence that the father, as arbitrator, made a gross error in calculating the accounts that were material to the dispute being arbitrated. If the court is convinced that the father erred in the calculations, should the award be set aside? Why or why not?