You think Hoyle believed in little green men? Maybe you're thinking of Francis Crick or Carl Sagan.
..... In the 1950s, Hoyle was the leader of a group of very talented experimental and theoretical physicists; with William Alfred Fowler, Margaret Burbidge, and Geoffrey Burbidge. This group realized the basic ideas of how all the chemical elements in our Universe were manufactured, with this now being a field called nucleosynthesis. Famously, in 1957, this group produced the cornerstone B2FH paper (known for the initials of the four authors) in which the field of nucleosynthesis was defined and the large picture solved.
An early paper of Hoyle's made an interesting use of the anthropic principle. In trying to work out the routes of stellar nucleosynthesis, he observed that one particular nuclear reaction, the triple-alpha process, which generates carbon, would require the carbon nucleus to have a very specific resonance energy for it to work. The large amount of carbon in the universe, which makes it possible for carbon-based life-forms of any kind to exist, demonstrated that this nuclear reaction must work. Based on this notion, he made a prediction of the energy levels in the carbon nucleus that was later borne out by experiment.
These energy levels, while needed to produce carbon in large quantities, were statistically very unlikely. Hoyle later wrote:
Would you not say to yourself, "Some super-calculating intellect must have designed the properties of the carbon atom, otherwise the chance of my finding such an atom through the blind forces of nature would be utterly minuscule. A common sense interpretation of the facts suggests that a superintellect has monkeyed with physics, as well as with chemistry and biology, and that there are no blind forces worth speaking about in nature. The numbers one calculates from the facts seem to me so overwhelming as to put this conclusion almost beyond question."
Despite writing the above, Hoyle was an atheist. He did posit a panspermia theory to account for life on earth - but no little green men:
In 1982 Hoyle presented Evolution from Space for the Royal Institution's Omni Lecture. After considering what he thought of as a very remote probability of Earth-based abiogenesis he concluded:
If one proceeds directly and straightforwardly in this matter, without being deflected by a fear of incurring the wrath of scientific opinion, one arrives at the conclusion that biomaterials with their amazing measure or order must be the outcome of intelligent design. No other possibility I have been able to think of...
—Fred Hoyle [14]
Published in his 1982/1984 books Evolution from Space (co-authored with Chandra Wickramasinghe), Hoyle calculated that the chance of obtaining the required set of enzymes for even the simplest living cell without panspermia was one in 1040,000. Since the number of atoms in the known universe is infinitesimally tiny by comparison (1080), he argued that Earth as life's place of origin could be ruled out. He claimed:
The notion that not only the biopolymer but the operating program of a living cell could be arrived at by chance in a primordial organic soup here on the Earth is evidently nonsense of a high order.
Hoyle, who was an atheist, [15] anti-theist[ citation needed] and Darwinist, said that this apparent suggestion of a guiding hand left him "greatly shaken." Those who advocate the intelligent design (ID) belief sometimes cite Hoyle's work in this area to support the claim that the universe was fine tuned in order to allow intelligent life to be possible. Alfred Russel of the Uncommon Descent community has even gone so far as labeling Hoyle "an atheist for ID". [16]
Hoyle compared the random emergence of even the simplest cell without panspermia to the likelihood that "a tornado sweeping through a junk-yard might assemble a Boeing 747 from the materials therein." Hoyle also compared the chance of obtaining even a single functioning protein by chance combination of amino acids to a solar system full of blind men solving Rubik's Cubes simultaneously. [17]
|
