The article doesn't talk about how productivity is measured and the actual sensitivity and accuracy of the measurement(s). As others have pointed out, measur

The article doesn't talk about how productivity is measured and the actual sensitivity and accuracy of the measurement(s). As others have pointed out, measuring productivity is a little hazy and probably is influenced by subjective bias (hey a recession might be coming... hmm, I feel like less work is getting done at my office). I wonder how much bias affects the reported measurements? I doubt businesses outside of manufacturing can actually discern a 2% change in productivity, when screening for other factors, and some of them can't discern a 5% change.