"We need to retire that downstream mindset, according to Heath."

I do not understand this concluding quote after you quoted the much smarter all-stream approach of YMCA. Can you please explain.

The prime real world problem is a lack of ambidextrous minds. They are able to do both. I.e., saving every single day to survive it, and preparing for worse things to happen in the future to benefit from them, as Nassim Taleb preaches.

He also provides his antifragile approach for developing this ability: "How do you innovate? First, try to get in trouble." Thus, solving problems comes first. Only if you master that, you are able to move upstream. This is necessary to avoid becoming an IYI, lecturing birds, how to fly.