Ecological economists, of course, are much more worried about climate change than green economic growth. So i'm wondering what got you thinking about kind of that eco economics version of pol economy back in the eighties and nineties. And how did that end up shaping the way you took on the political economy of climate change? It's a leftis tradition, and it's in economics itself to say a that standard capitalist economics is effectively a panse scheme that obscures the an extraction that can't last forever. That by ignoring that stuff, by making these negative externalities, are just not in the equations at all.