We know that there is no margin for error - we know that a bad day, a missed sign, an unreturned phone call, a delayed visit, could potentially result in the loss of a child's life.
While some would consider this an error, we know it to be the beauty of the business.
The fact is that R-R was controversial right from the beginning; and very early on, although we didn't know about the coding error, we knew that they had made a major blooper by citing the US contraction after World War II as an example of debt overhang, when it was actually just postwar demobilization.
"We have lots of experience from hundreds of years, through trial and error, and we know very well that when you start mixing metals in roughly equal amounts, you do not have good mechanical properties in most cases, due to the presence of brittle intermetallic phases," Tasan explains.
If such artificially benign models show significant error then we know the reality can only be worse.
Following corrections to the initial dataset which contained some errors, we now know an alert will be raised for seven surgeons due to their comparatively bad record on repairing abdominal aortic aneurysms, a highly dangerous bulge in the aorta.
If someone presents an argument designed to support a moral error theory then we know what to expect.
If Ireland have a point of difference it's their attack and the moment Joe Schmidt wanted the roof closed, I thought that was a tactical error because we knew Wales would front up and play a smart game.
Raising a fist he added, to cheers: "If the United States commits the error of invading us, we know we will struggle with you at our side.
