Let's Keep It Simple--Dickeson

We thought the cost systems would tell us where we went wrong when we lost big time on some job—post mortem stuff. But we just didn't know about routine process variation. Maybe that loss was just routine variance. We didn't think about the non-linearity of the numbers—didn't know how to measure and find out. And even if we did know, what can we do about it now? That knowledge won't work in our computer system. The one we've already bought and paid for.