Tom McLeish

“Order Out of Chaos ... At the right temperature ... two peptide molecules will stay together long enough on average to find a third. Then the little trio finds a fourth peptide to attract into the little huddle, just through the random side-stepping and tumbling induced by all the rolling water molecules. Something extraordinary is happening: a larger structure is emerging from a finer system, not in spite of the chaotic and random motion of that system but because of it.

Without the chaotic exploration of possibilities, the rare peptide molecules would never find each other, would never investigate all possible ways of aggregating so that the tape-like polymers emerge as the most likely assemblies. It is because of the random motion of all the fine degrees of freedom that the emergent, larger structures can assume the form they do. Even more is true when the number of molecules present becomes truly enormous, as is automatically the case for any amount of matter big enough to see. Out of the disorder emerges a ... pattern of emergent structure from a substrate of chaos....

The exact pressure of a gas, the emergence of fibrillar structures, the height in the atmosphere at which clouds condense, the temperature at which ice forms, even the formation of the delicate membranes surrounding every living cell in the realm of biology -- all this beauty and order becomes both possible and predictable because of the chaotic world underneath them....

Even the structures and phenomena that we find most beautiful of all, those that make life itself possible, grow up from roots in a chaotic underworld. Were the chaos to cease, they would wither and collapse, frozen rigid and lifeless at the temperatures of intergalactic space.

This creative tension between the chaotic and the ordered lies within the foundations of science today, but it is a narrative theme of human culture that is as old as any. We saw it depicted in the ancient biblical creation narratives of the last chapter, building through the wisdom, poetic and prophetic literature. It is now time to return to those foundational narratives as they attain their climax in a text shot through with the storm, the flood and the earthquake, and our terrifying ignorance in the face of a cosmos apparently out of control. It is one of the greatest nature writings of the ancient world: the book of Job.”
― Tom McLeish, Faith and Wisdom in Science

“But science also emerges from an ancient longing, and from an older narrative of our complex relationship with the natural world. Its primary creative grammar is the question, rather than the answer. Its primary energy is imagination rather than fact. Its primary experience is more typically trial than triumph--the journey of understanding already travelled always appears to be a trivial distance compared with the mountain road ahead. But when science recognises beauty and structure it rejoices in a double reward: there is delight both in the new object of our gaze and in the wonder that our minds are able to understand it.

Scientists recognise all this--perhaps that is why when, as I have often suggested to my colleagues, they pick up and read through the closing chapters of the Old Testament book of Job, they later return with responses of astonishment and delight.”
― Tom McLeish, Faith and Wisdom in Science