Imagine, as many people do, an all-seeing eye in the sky, looking down on planet Earth. Imagine seeing what it sees. It watches, over the course of decades, ice caps shrinking, rainforests retreating, deserts expanding, ocean circulation slowing, freshwater dwindling and sea levels rising, and it thinks – for it has been there since the beginning – “this is familiar”. All the signs are there, of an Earth system sliding towards collapse, as it has done five times since animals with hard body parts first evolved.
But this time, it knows, is different. Not only is one of the life forms causing the collapse, but it shares some of the eye’s supernatural abilities: it too can see what is happening. So, with heightened curiosity, the eye zooms in, to see what this well-informed being is doing to avert catastrophe.
