If almost any of the basic features of the universe, from the properties of atoms to the distribution of the galaxies, were different, life would very probably be impossible. Now, it happens that to meet these various requirements, certain stringent conditions must be satisfied in the underlying laws of physics that regulate the universe, so stringent in fact that a biofriendly universe looks like a fix - or 'a put-up job', to use the pithy description of the late British cosmologist Fred Hoyle. It appeared to Hoyle as if a super-intellect had been 'monkeying' with the laws of physics. He was right in his impression. On the face of it, the universe does look as if it has been designed by an intelligent creator expressly for the purpose of spawning sentient beings. Like the porridge in the tale of Goldilocks and the three bears, the universe seems to be 'just right' for life, in many intriguing ways. No scientific explanation for the universe can be deemed complete unless it accounts for this appearance of judicious design. Until recently, 'the Goldilocks factor' was almost completely ignored by scientists. Now, that is changing fast. As I shall discuss in the following chapters, science is at last coming to grips with the enigma of why the universe is so uncannily fit for life. The explanation entails understanding how the universe began and evolved into its present form, and knowing what matter is made of and how it is shaped and structured by the different forces of nature. Above all, it requires us to probe the very nature of physical laws.
"The Goldilocks Enigma" Paul Davies.
Is there only one temperature of porridge, measured down to the tenth degree Celcius, that is suitable for Goldilocks, or is there a range of temperatures that Goldilocks would find "just right"?
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