For a consistent naturalist science can only be a refinement of animal exploration, a practice humans have devised for finding their way in the bit o… - John N. Gray

Cheating ageing by a low-calorie diet, uploading one’s mind into a super-computer, migrating into outer space … Longing for everlasting life, humans show that they remain the death-defined animal.

While the Marxist faith in central planning is now confined to a few dingy sects, a quasi-religious belief in free markets continues to shape the policies of governments.<p>Many writers have pointed to the havoc and ruin that have accompanied the imposition of free markets across the world. Whether in Africa, Asia, Latin America or post-communist Europe, policies of wholesale privatisation and structural adjustment have led to declining economic activity and social dislocation on a massive scale.

From a Darwinian point of view, human beliefs are adaptations to our part of the world. No doubt much of what we believe must be roughly accurate, or else we would not have survived. But the beliefs we have evolved might latch on to the world only enough to help us stumble our way through it, and then only for the time being. Human belief-systems could be useful illusions, appearing and disappearing as they prove to be more or less advantageous in the random walk of natural selection. Might not evolution be one of these illusions? Scientific naturalism is the theory that human beliefs are evolutionary adaptations whose survival has nothing to do with their truth. But in that case scientific naturalism is self-defeating, since on its own premises scientific theories cannot be known to be true.