Just to throw another log on the fire, here, a few are drawing analogies to the similarity between BB and a university degree. A couple of problems that I see with that:
1) A BB is a reflection of your physical skill, both knowledge AND capability. Should one choose to stop training or practicing, their physical abilities will suffer. Decades later, I'm sure its reasonable to assume that the BB practitioner who has taken an extended sabbatical will no longer move with anywhere near the skill or power or flexibility or endurance that they used to. At what level do you think they would be able to , unprepared, test in this scenario?
2) Consider the person who has aquired their degree in any discipline in 1940. In the year 2004, would their knowledge base be sufficient to equate to a recent grad, given the 1940 grad did not keep up with current trends and new discoveries and methods?
I guess it depends upon how one defines their BB. Is it a reflection of an achievement at some point in time, or of their current ability?