Edited sentence: Conceptually, the "V" scale is the bouldering equivalent of the earlier Australian (Ewbank) grading system for climbing - both have the advantages of not predefining an upper limit on difficulty measurement (as happened with the original Yosemite Decimal System), nor of having artificial divisions within the range of grades (as is the case with most other grading systems that use designations such as "a", "b", "c", "d", "+", "-" etc.within a single "grade")