The question even Darwin avoided

The Sydney Morning Herald ^ | 12/22/05 | Paul Davies

[Michael_Michaelangelo]

WHEN Charles Darwin published On the Origin of Species in 1859, he gave a convincing account of how life has evolved over billions of years from simple microbes to the complexity of the Earth's biosphere to the present. But he pointedly left out how life got started.

One might as well speculate about the origin of matter, he quipped. Today scientists have a good idea of how matter originated in the Big Bang, but the origin of life remains shrouded in mystery.

Although Darwin refused to be drawn on how life began, he conjectured in a letter to a friend about "a warm little pond" in which various substances would accumulate.

Driven by the energy of sunlight, these chemicals might become increasingly complex, until a living cell formed spontaneously. Darwin's idle speculation became the basis of the "primordial soup" theory of biogenesis, and was adopted by researchers eager to re-create the crucial steps in the laboratory. But this approach hasn't got very far.

The problem is that even the simplest known organism is incredibly complex. Textbooks vaguely describe the pathway from non-living chemicals to primitive life in terms of some unspecified "molecular self-assembly".

The problem lies with 19th-century thinking, when life was regarded as some sort of magic matter, fostering the belief that it could be cooked up in a test tube if only one knew the recipe.

Today many scientists view the living cell as a type of supercomputer - an information-processing and replicating system of extraordinary fidelity. DNA is a database, and a complex encrypted algorithm converts its instructions into molecular products.

[tgambill]

Well put, and few words says it all..........