The China GDP Growth Meme

Unless you’ve been under a rock you likely saw the stories today about how China is supposedly going to pass the U.S. in terms of GDP by 2030. Absent collapse, I don’t think it’s going to happen (a 6%-plus pro-China delta in GDP growth for 20 years is wildly unlikely) , but the following graph is fairly typical of that sort of linear thinking. Can you spot other unlikely trajectories?