In late 2017, Branko Milanovic wrote a blog post titled “The illusion of degrowth in a poor and unequal world.” He penned it, he says, following a conversation he had with a proponent of degrowth, which was me. I wrote a response, which I have updated here for clarity, and to account for new data.
To recap Milanovic’s argument: he imagines a scenario in which we cap global GDP at present levels. Poor countries then increase their GDP per capita to the global average, while rich countries decrease their GDP per capita accordingly. He says that this would entail a reduction of production and consumption in the West, with economic activity slashed to one-third of its present size.