That's totally a good point and I don't mean to say you haven't got me on that. The one thing I might point out, though, is that environmentalism wasn't a cultu

That's totally a good point and I don't mean to say you haven't got me on that. The one thing I might point out, though, is that environmentalism wasn't a cultural shift, it was mostly just a response to a practical problem. You can certainly see other collective action problems that have gotten a government response. The movement to build nuclear weapons was a collective action, but it wasn't really a change in culture.