This planet has – or rather had – a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movements of small green pieces of paper, which is odd because on the whole it wasn't the small green pieces of paper that were unhappy.

And so the problem remained; lots of the people were mean, and most of them were miserable, even the ones with digital watches.

Many were increasingly of the opinion that they'd all made a big mistake in coming down from the trees in the first place. And some said that even the trees had been a bad move, and that no one should ever have left the oceans.

Jared Diamond once called agriculture the worst mistake in the history of the human race, but Daniel Ben-Ami at spiked online still thinks we can just invent our way out of scarcity.

But the pervasive cynicism towards popular prosperity still has a negative effect. It makes it harder to enjoy or make the most of what we have got. It is also a barrier against making things better still. In this context, it is important to remember that there are still many billions of people in the world who live in poor countries. And yet the prospect of everyone having access to the best the world has to offer is commonly seen as an environmental nightmare rather than a worthwhile goal.

That there may in fact be practical limits to growth, or that we may be fast approaching those limits, is something Ben-Ami seems not to consider.