I think that people measuring their career progression will occur in many different way. Whilst I enjoyed the story and its use as an analogy, I remember that career progress does not have a simple measure like height so can be documented in so many different ways.

It seems that many people say this or the equivalent: work out what you want to record and how you want to do it. Then do it.

Also do not be reticent about changing ones method of documentation e.g. if yesterday you achieved it by maintaining your CV on an annual basis but now you are thinking of blogging then change tack. Again, do it.