Summary: Being middle-aged has its costs? I do not have a TikTok account, and am only on Twitter by accident. However, being middle-aged, I have experience that brings a sense of deja vu. The IMF announced it would be revising up its economic growth estimates. The WTO announced it would be revising up its trade estimates. Middle-aged experience tells us there is always a tendency to underestimate people's willingness to adapt in a crisis?which is why we always get positive revisions after a crisis.