"Productivity is finding better ways to make something - using less resources, people and capital. When you look at productivity it does not grow at a steady pace...if you look at productivity since the financial crisis it has really started to fade off dramatically...Productivity has slowed in developed markets because the number of people employed in services has increased in thirty years. It is hard to improve productivity in the service sector: how do you improve the productivity of a haircut?" (Subitha Subramaniam [Chief Economist], Citywire Article, 22 Sept 2016) In the quote above, Subramaniam states that "it is hard to improve productivity in the service sector". Do you agree or disagree with this statement? Justify your answer with particular reference to service quality.