I agree with the author when he says "Our point is that educational effort of substance will be required to get the most out of that small set of ideas—agrarianism, the commons, no-growth economics, and the maximum wage—that hold the greatest promise for solving the world’s most vexing problems". When our culture hits the point where we can no longer proceed with its ways of living- hyper consuming resources and having an over all lack of concern for other living entities- we will have to make a return to some form of "simpler", agrarian society.
A shift of this magnitude will require a revolution in the way humans view their world. Most importantly, the covenant that our society obeys today, self improvement by any means necessary, must be vanquished. This will most likely only be accomplished by a massive grassroots revolution or a near extinction of entire races of people due to our blind consumption of resources.
Education will be crucial to this process. I like how the article states that eduction shouldn't be a means to prepare you for later, but education should be happening in the present as one goes about their daily lives, working to improve their environment.
A truly sophisticated culture will be able to recognize and admit the mistakes they've made, and then be willing to "devolve" back to a more sustainable lifestyle. From what I've noticed, our culture is notorious for not being able to accept our mistakes, and the idea of devolution is tagged with countless wretched monikers.
“That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.” - Aldous Huxley