"...Destructive criticism has recently been decried in an editorial in an engineering journal. Some kinds of destructive criticism are of the highest benefit; when it succeeds in destroying error it is reconstructive. No reform was ever accomplished without it and noreformer ever existed who was not a destructive critic. If showing up errors and faults is destructive criticism we cannot have too much of it; in fact we cannot advance without it. If engineering practice is to be purged of its inconsistencies and absurdities it will never be done by dwelling on its excellencies..."