If it now takes researchers much more time to come up with ideas, how much of that is caused by their consumption of distractions?

Sir, Diane Coyle writes that current productivity data does not consider what’s achieved through outsourcing since GDP excludes all the intermediate links in the chain and the additional value is netted out. If included “economic output would look somewhat better than the current statistics suggest. “Conventional measures pose the wrong productivity question” August 16.

But when Coyle refers to “a recent paper a group of economists from Stanford University and the Massachusetts Institute of Technology…calculate that it now takes more than 20 times the number of researchers to generate the same economic growth as it did in the 1930s.” I would have to ask: Does that calculation take due consideration of the ever-growing time researchers spend, not working, but consuming distraction on the cell phones or laptops?

Some months ago, in Bank of England’s “bankunderground” blog, we read a post by Dan Nixon titled “Is the economy suffering from the crisis of attention?” It said, “With the rise of smartphones in particular, the amount of stimuli competing for our attention throughout the day has exploded... we are more distracted than ever as a result of the battle for our attention. One study, for example, finds that we are distracted nearly 50% of the time.”

If those distractioninterruptions were recorded for what they really are, we would probably see a dramatic increase in productivity, in real salaries, in voluntary unemployment and in GDP.

In other words our current economic compasses might not be working properly, risking taking us in the wrong direction.

@PerKurowski