02 MAR 2019 by ideonexus
The Anthropic Principle
As an example of the power of the Anthropic Principle, consider the number of directions in space. It is a matter of common experience that we live in three-dimensional space. That is to say, we can represent the position of a point in space by three numbers. For example, latitude. longitude and height above sea level. But why is space three-dimensional? Why isn't it two, or four, or some other number of dimensions, hke in science fiction? In fact, in M-theory space has ten dimensions (as wel...Folksonomies: anthropic principle
Folksonomies: anthropic principle
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notes24 DEC 2016 by ideonexus
Vernadsky vs Chardin on the Biosphere-Noosphere
Although the ages of Teilhard de Chardin (1881-1955) and Vernadsky (1863-1945) differed, they were at the comparable level of scientific maturity concerning the growth of their biosphere — noosphere theories. Vernadsky first presented his views on the biosphere systematically when he published The Biosphere 2in 1926, although he began using the term biosphere much earlier (1911). In his Essays on Geochemistry ³, lectures written in Petrograd (St. Petersburg) in 1921, Vernadsky used both of ... 1 notes
notes01 JUN 2012 by ideonexus
Complexity of the Octopus
[The octopus has] an amazing skin, because there are up to 20 million of these chromatophore pigment cells and to control 20 million of anything is going to take a lot of processing power. ... These animals have extraordinarily large, complicated brains to make all this work. ... And what does this mean about the universe and other intelligent life? The building blocks are potentially there and complexity will arise. Evolution is the force that's pushing that. I would expect, personally, a lo...Folksonomies: evolution extraterrestrials
Folksonomies: evolution extraterrestrials
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notesDemonstrates that incredible complexity in life can originate anywhere through evolution.
07 MAY 2012 by ideonexus
Human Space Exploration is Overrated
Perhaps what we should do is genetically engineer new forms of Intelligent life that can survive the stress of space yet still conduct scientific experiments. Actually, such creatures have already been made in the lab. They're called robots. You don't have to feed them, they don't need life support, and they won't get upset if you don't bring them back to Earth. People, on the other hand, generally want to breathe, eat, and eventually come home.
It's probably true that no city has ever held...Folksonomies: space exploration space flight
Folksonomies: space exploration space flight
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notesWe don't remember most of the astronauts, but we do have favorite space photos taken by all the robots we've sent out into the solar system.
25 APR 2012 by ideonexus
Life Can Go On for Billions of Years
I believe that life can go on forever. It takes a million years to evolve a new species, ten million for a new genus, one hundred million for a class, a billion for a phylum—and that's usually as far as your imagination goes. In a billion years, it seems, intelligent life might be as different from humans as humans are from insects. But what would happen in another ten billion years? It's utterly impossible to conceive of ourselves changing as drastically as that, over and over again. All you...Freeman Dyson quote about the future of humanity.
12 APR 2012 by ideonexus
Intelligent Life May Have Appeared in the Universe Billio...
[W]e might expect intelligent life and technological communities to have emerged in the universe billions of years ago. Given that human society is only a few thousand years old, and that human technological society is mere centuries old, the nature of a community with millions or even billions of years of technological and social progress cannot even be imagined. ... What would we make of a billion-year-old technological community? Folksonomies: extraterrestrials alien life
Folksonomies: extraterrestrials alien life
1 Considering the age of the universe. The technological progress of such extraterrestrials would make them godlike.
22 MAR 2012 by ideonexus
The Flat Universe Problem
The next obvious feature of the universe in which we live is that it is old, very old. It took intelligent life about 3.5 billion years to develop on Earth. Hence, our existence requires a universe that accommodated our arrival by lasting billions of years. The current best estimate for the age of our universe is between about 10 billion and 20 billion years, which is plenty long enough. It turns out, however, that it is not so easy a priori to design a universe that expands, as our universe ... 1 notes
notesOur Universe is remarkably well tuned, and appears to have laws in place to keep it that way.
13 DEC 2011 by ideonexus
The Strong Anthropic Principle
The weak anthropic principle is not very controversial. But there is a stronger form that we will argue for here, although it is regarded with disdain among some physicists. The strong anthropic principle suggests that the fact that we exist imposes constraints not just on our environment but on the possible form and content of the laws of nature themselves. The idea arose because it is not only the peculiar characteristics of our solar system that seem oddly conducive to the development of h... 1 notes
notesOur existence puts constraints on the very laws of nature.
04 MAR 2011 by ideonexus
Philip K Dick's Perception of Fate
Phillip Dick was intrigued by devices that allowed him to examine the mechanisms by which life unfolds. I think he voted for free will in the short run (the span of intelligent life on Earth, say), evolution for the middle distance (things develop according to underlying principles) and predestination in the long run (the universe will entropy and cease). A man and a woman whose eyes Meet Cute need only be concerned about the very short run.Folksonomies: predestination fate
Folksonomies: predestination fate
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notesEbert suggests Dick saw us having free will in the short term, with the long term dictated by certain rules, and the extreme long term having a set fate.
03 JAN 2011 by ideonexus
Leave Room for Uncertainty
What then is the meaning of the whole world? We do not know what the meaning of existence is. We say, as the result of studying all of the views that we have had before, we find that we do not know the meaning of existence; but in saying that we do knot know the meaning of existence, we have probably found the open channel--if we will allow only that, as we progress, we leave open opportunities for alternatives , that we do not become enthusiastic for the fact, the knowledge, the absolute tru...Science doesn't have the meaning of life, but we are muddling through it and that's a good thing.
