" If .. one can never step into the same river twice .. one will always be taken unawares by experience .. nothing can ever be known. We have to find a way of fixing it as it flies, stepping back from the immediacy of experience, stepping outside the flow. Hence the brain has to attend to the world in two completely different ways. In one, we experience - the live, complex, embodied, world of individual, always unique beings, forever in flux, a net of interdependencies, forming and reforming wholes, a world with which we are deeply connected. In the other we experience in a special way: a re-presented version .. containing now static, separable, bounded, but essentially fragmented entities, grouped into classes, on which predictions can be based. This kind of attention isolates, fixes and makes each thing explicit by bringing it under the spotlight of attention.. it renders things inert, mechanical, lifeless. But it also enables us to for the first time to know.. This gives us power. "

― Iain McGilchrist , The Master and His Emissary: The Divided Brain and the Making of the Western World