Tim Worstall on how our traditional economic measurements are less and less accurate for the modern economic picture:
… in the developed countries there’s a problem which seems to me obvious (and Brad Delong has even said that I’m right here which is nice). Which is that we’re just not measuring the output of the digital economy correctly. For much of that output is not in fact priced: what Delong has called Andreessenian goods (and Marc Andreessen himself calls Mokyrian). For example, we take Google’s addition to the economy to be the value of advertising that Google sells, not the value in use of the Google search engine. Similarly, Facebook is valued at its advertising sales, not whatever value people gain from being part of a social network of 1.3 billion people. In the traditional economy that consumer surplus can be roughly taken to be twice the sales value of the goods. For these Andreessenian goods the consumer surplus could be 20 times (Delong) or even 100 times (my own, very controversial and back of envelope calculations) that sales value.
We are therefore, in my view, grossly underestimating output. And since we measure productivity as the residual of output and resources used to create it we’re therefore also grossly underestimating productivity growth. We’re in error by using measurements of the older, physical, economy as our metric for the newer, digital, one.
In short, I simply don’t agree that growth is as slow as we are measuring it to be. Thus any predictions that rely upon taking our current “low” rate of growth as being a starting point must, logically, be wrong. And that also means that all the policy prescriptions that flow from such an analysis, that we must spend more on infrastructure, education, government support for innovation, must also be wrong.