"The start of the collapse of the industrial production (here calculated in per capita terms) was supposed to be at some moment between 2010 and 2020. A little too early, because we passed that moment. But that calculation was made more than 50 years ago, and it is legitimate to think that it needs some readjustments. That was what Nebel et al did in a recent paper; they recalibrated the same model (word3) on the basis of the available real-world data. And here is their result. "