Although most software metrics satisfy these attributes, some commonly used metric may fail to satisfy one or two of them. An example is the function point (discussed in Section 23.2.1) a measure of the “functionality” delivered by the software. It can be argued that the consistent and objective attribute fails because an independent third party may not be able to derive the same function point value as a colleague.
using the same information about the software. Should we therefore reject the FP measure? The answer is ”Of course not!” FP provides useful insight and therefore provides distinct value, even if it fails so satisfy one attribute perfectly.