It is a common pattern in a number of investigations. We could take a look and say this particular element has been proven to be part and parcel of an occurrence, which means that it contributes to the occurrence in a number of areas. It's based upon the significance, according to the risk assessment that we have on that and including the possible consequences of the issue as well. So that is what we base our recommendations on.
On February 19th, 2007. See this statement in context.