Following the implementation of COB's new F/Ns in 1995, normally smooth-running pcs started to find themselves entangled in long, often grindy ruds sessions. Many wondered how they could have felt so good at start of session, yet not be F/Ning.

This has only escalated in the years since. In just the first seven months of 2008, for example, at least three pcs here at Flag have written reports of whole intensives being eaten up by rudiments.