Thread: Ancient Aliens
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Old November 24 2012, 10:18 PM   #422
RAMA
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Re: Ancient Aliens

BillJ wrote: View Post
newtype_alpha wrote: View Post
In which case, you concede the point: Stephen Hawking could make a patently absurd claim and have people believe him because He's Stephen Hawking, He Would Know. The basis of his prediction is almost immaterial; a complete nobody, making the same prediction, would be met with due skepticism even if his prediction had scientific merit. I'm actually surprised you have a problem with this, because this is EXACTLY what the Ancient Aliens/Paranomalist people are complaining about: nobody takes them seriously and calls them "crackpots" and "fringe theorists," and their ideas get panned automatically even when they're RIGHT about things. In the public eye, and even among some scientists, labels are often more important than data.
What exactly have they been "right" about?
The almost infinitesimal degree to which ancient alien believers may be right (and this isn't really a case of them being right, but some advanced tech, like batteries, or some vague artwork on a wall, or some other advancements in tech that disappeared and reappeared, or even Nazca lines--in which ancients likely had balloon technology, and possibly used that to survey them) compared to what Hawking and others have claimed with careful research based on sound extrapolation is not comparable. This is one of Alpha's silliest claims.

It's useful to see why Hawking thinks what he does in his lecture:

In the past decade, we’ve examined our Solar System’s orbit through the Milky Way to ask whether there may be clues to periodic mass extinctions on our planet. We've launched missions seeking out habitable Alien Earths and the existence of dark energy and have migrated from wondering if there's life on Mars to searching out and studying myriads of exo planets in the Milky Way and infinite galaxies beyond.


Physicist Stephen Hawking believes that we have entered a new phase of evolution. "At first, evolution proceeded by natural selection, from random mutations. This Darwinian phase, lasted about three and a half billion years, and produced us, beings who developed language, to exchange information."

But what distinguishes us from our cave man ancestors is the knowledge that we have accumulated over the last ten thousand years, and particularly, Hawking points out, over the last three hundred.

"I think it is legitimate to take a broader view, and include externally transmitted information, as well as DNA, in the evolution of the human race," Hawking said.

In the last ten thousand years the human species has been in what Hawking calls, "an external transmission phase," where the internal record of information, handed down to succeeding generations in DNA, has not changed significantly. "But the external record, in books, and other long lasting forms of storage," Hawking says, "has grown enormously. Some people would use the term, evolution, only for the internally transmitted genetic material, and would object to it being applied to information handed down externally. But I think that is too narrow a view. We are more than just our genes."

There are about 50,000 new books published in the English language each year, containing of the order of a hundred billion bits of information. Of course, the great majority of this information is garbage, and no use to any form of life. But, even so, the rate at which useful information can be added is millions, if not billions, higher than with DNA.”
The time scale for evolution, in the external transmission period, has collapsed to about 50 years, or less.

Meanwhile, Hawking observes, our human brains "with which we process this information have evolved only on the Darwinian time scale, of hundreds of thousands of years. This is beginning to cause problems. In the 18th century, there was said to be a man who had read every book written. But nowadays, if you read one book a day, it would take you about 15,000 years to read through the books in a national Library. By which time, many more books would have been written."

But we are now entering a new phase, of what Hawking calls "self designed evolution," in which we will be able to change and improve our DNA. "At first," he continues "these changes will be confined to the repair of genetic defects, like cystic fibrosis, and muscular dystrophy. These are controlled by single genes, and so are fairly easy to identify, and correct. Other qualities, such as intelligence, are probably controlled by a large number of genes. It will be much more difficult to find them, and work out the relations between them. Nevertheless, I am sure that during the next century, people will discover how to modify both intelligence, and instincts like aggression."

If the human race manages to redesign itself, to reduce or eliminate the risk of self-destruction, we will probably reach out to the stars and colonize other planets. But this will be done, Hawking believes, with intelligent machines based on mechanical and electronic components, rather than macromolecules, which could eventually replace DNA based life, just as DNA may have replaced an earlier form of life.
http://www.hawking.org.uk/life-in-the-universe.html

Titled life in the universe
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