The choice of metric is a political choice, since it represents what we want to maximize. Thinking it is possible to have a single "objective" metric that would allow to rank progress in any country seems absurd ; thankfully most countries in the world have singular objectives for the evolution of their nation.

Saying that the well being of a nation can be summed up in a single indicator is framing of the political possibilities. Dumping GDP is necessary ; replacing it, maybe not.

But then the claim by economists of the possibility of finding an "optimal" state of the economy falls down. Maybe that claim has caused enough damages lately, any way...

Un roi sans divertissement est un homme plein de misères