> I also like to put my faith in a human (or multiple humans) then going over it again "just in case"... in this case it would be someone following behind with another torque wrench to make sure the first guy hadn't missed something or was maybe using a defective wrench.
A second pass with a torque wrench is probably not such a bad idea, but multiple _checks_ by humans is not necessarily beneficial.
A few years ago I worked for a company making small-batch pharmaceuticals (almost exclusively with ingredients drawn and mixed by hand, since the batches were so small), and the consensus (backed by research) there was that adding a second human check made quality worse rather than better - the second checker assumes that the first did the job correctly, and the person doing the work assumes that mistakes will be caught further down the line.