24 JAN 2015 by ideonexus

 Life with Metabolism VS Replication

It is logically possible to postulate organisms composed of pure hardware, capable of metabolism but incapable of replication. It is possible to postulate organisms composed of pure software, capable of replication but incapable of metabolism. And if the functions of life are separated in this fashion, it is to be expected that the latter type of organism will become an obligatory parasite upon the former. This logical analysis of the functions of life helps to explain and to correct the bias...
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20 FEB 2014 by ideonexus

 Defining "Uncertainty"

‘Uncertainty’ is a complex and multifaceted property, sometimes originating in a lack of information, and at other times from quite fundamental disagreements about what is known or even knowable (Moss and Schneider, 2000). Furthermore, scientists often disagree about the best or most appropriate way to characterize these uncertainties: some can be quantified easily while others cannot. Moreover, appropriate characterization is dependent on the intended use of the information and the parti...
Folksonomies: uncertainty definitions
Folksonomies: uncertainty definitions
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From the IPCC report. Interesting for including different definitions of terms in its description.

05 JUN 2012 by ideonexus

 Accepting Gray Areas in Concepts

Perhaps the problem is the seeming need that people have of making black-and-white cutoffs when it comes to certain mysterious phenomena, such as life and consciousness. People seem to want there to be an absolute threshold between the living and the nonliving, and between the thinking and the “merely mechanical,” ... But the onward march of science seems to force us ever more clearly into accepting intermediate levels of such properties.
Folksonomies: life definitions
Folksonomies: life definitions
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Such as defining life, instead of demanding black and white boundaries.

31 MAY 2012 by ideonexus

 Ontogeny and Phylogeny

The History of Evolution of Organisms consists of two kindred and closely connected parts: Ontogeny, which is the history of the evolution of individual organisms, and Phylogeny, which is the history of the evolution of organic tribes. Ontogency is a brief and rapid recapitulation of Phylogeny, dependent on the physiological functions of Heredity (reproduction) and Adaptation (nutrition). The individual organism reproduces in the rapid and short course of its own evolution the most important ...
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Haekle explains the difference.

29 MAY 2012 by ideonexus

 Definition of Culture

[Culture] denotes an historically transmitted pattern of meanings embodied in symbols, a system of inherited conceptions expressed in symbolic forms, by means of which men communicate, perpetuate, and develop their knowledge about and attitudes toward life.
Folksonomies: culture definitions
Folksonomies: culture definitions
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Very succinct.

17 NOV 2011 by ideonexus

 Syzygy

No direct quote for this yet.
Folksonomies: definitions concepts syzygy
Folksonomies: definitions concepts syzygy
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Pronounced "siz-i-jee" refers to planets coming into alignment in astronomy. When the Sun and Moon are lined up on the same side of the Earth, this state of syzygy creates higher and lower tides than are normally experienced.

21 SEP 2011 by ideonexus

 The Biological Species Concept (BSC)

And when we think of why we feel that brown-eyed and blue-eyed humans, or Inuit and !Kung, are members of the same species, we realize that it’s because they can mate with each other and produce offspring that contain combinations of their genes. In other words, they belong to the same gene pool. When you ponder cryptic species, and variation within humans, you arrive at the notion that species are distinct not merely because they look different, but because there are barriers between them ...
Folksonomies: biology definitions species
Folksonomies: biology definitions species
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A species is defined by the fact that its members can breed with one another.

19 MAY 2011 by ideonexus

 The Difficulty of Defining Species

The Platonist regards any change in rabbits as a messy departure from the essential rabbit, and there will always be resistance to change - as if all real rabbits were tethered by an invisible elastic cord to the Essential Rabbit in the Sky. The evolutionary view of life is radically opposite. Descendants can depart indefinitely from the ancestral form, and each departure becomes a potential ancestor to future variants. Indeed, Alfred Russel Wallace, independent co-discoverer with Darwin of e...
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The Platonist view of species defines all members as imperfect examples of a perfect example of the species, when in reality, there is a bell curve of examples that blend into other species.