Jonathan Cook in Counterpunch:
Back in the 1880s, the mathematician and theologian Edwin Abbott tried to help us better understand our world by describing a very different one he called Flatland. Imagine a world that is not a sphere moving through space like our own planet, but more like a vast sheet of paper inhabited by conscious, flat geometric shapes. These shape-people can move forwards and backwards, and they can turn left and right. But they have no sense of up or down. The very idea of a tree, or a well, or a mountain makes no sense to them because they lack the concepts and experiences of height and depth. They cannot imagine, let alone describe, objects familiar to us.
In this two-dimensional world, the closest scientists can come to comprehending a third dimension are the baffling gaps in measurements that register on their most sophisticated equipment. They sense the shadows cast by a larger universe outside Flatland. The best brains infer that there must be more to the universe than can be observed but they have no way of knowing what it is they don’t know.
This sense of the the unknowable, the ineffable has been with humans since our earliest ancestors became self-conscious.