Your article on measuring management consultant productivity is incredibly insightful. The way you highlight the importance of tangible measurements in an industry often seen as abstract and intangible aligns with my understanding as well.

Your argument about time logged serving as a direct measure of productivity provokes thought. Notwithstanding this point, let's take into consideration that quality doesn't always equate to quantity when it comes to work hours. For instance, consider Dorothy from "Golden Girls" in episode titled "The Audit," where she struggled to balance her job while simultaneously dealing with tax issues at home - a scenario we could liken to multitasking consultants who may need fewer hours for quality output due their skill or experience level.

On another note relating back towards billable utilisation rates, there can be circumstances where high utilization rate might not necessarily indicate higher productivity but possibly over-utilization leading to burnout similar again drawing analogy with Golden girls episode “Sick and Tired” which tells us how constant pressure can lead towards decreased performance levels.