02 MAR 2019 by ideonexus
Hawking Considers Computer Viruses Life
A living being like you or me usually has two elements: a set of instructions that tell the system how to keep going and how to reproduce itself, and a mechanism to carry out the instructions. In biology, these two parts are called genes and metabolism. But it is worth emphasising that there need be nothing biological about them. For example, a computer virus is a program that will make copies of itself in the memory of a computer, and will transfer itself to other computers. Thus it fits the...Folksonomies: life
Folksonomies: life
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notes20 NOV 2018 by ideonexus
Seeing Organizations as Biological Systems
There’s a continuing struggle between complexity and robustness in both evolution and human design. A kind of survival imperative, whether in biology, engineering, or business requires that simple, fragile systems become more robust. But the mechanisms to increase robustness will in turn make the system considerably more complex. Furthermore, that additional complexity brings with it its own unanticipated failure modes, which are corrected over time with additional robust mechanisms, which ... 1 notes
notes- Other takeaways: Resilience, rather than efficiency. Holism, rather than reductionism. Plurality, rather than universality. Pragmatism, rather than intellectualism Experimentation, rather than deduction Indirect, rather than direct approaches
12 DEC 2017 by ideonexus
Summary of Human Evolution
ABOUT 13.5 BILLION YEARS AGO, MATTER, energy, time and space came into being in what is known as the Big Bang. The story of these fundamental features of our universe is called physics.
About 300,000 years after their appearance, matter and energy started to coalesce into complex structures, called atoms, which then combined into molecules. The story of atoms, molecules and their interactions is called chemistry.
About 3.8 billion years ago, on a planet called Earth, certain molecules combi...Folksonomies: epic history
Folksonomies: epic history
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notes07 FEB 2014 by ideonexus
The Century of Biology
The century of biology upon which we are now well embarked is no matter of trivialities. It is a movement of really heroic dimensions, one of the great episodes in man's intellectual history. The scientists who are carrying the movement forward talk in terms of nucleo-proteins, of ultracentrifuges, of biochemical genetics, of electrophoresis, of the electron microscope, of molecular morphology, of radioactive isotopes. But do not be fooled into thinking this is mere gadgetry. This is the depe... 1 notes
notesA visionary statement.
22 JAN 2014 by ideonexus
Everything is Made of Atoms
Everything is made of atoms. That is the key hypothesis. The most important hypothesis in all of biology, for example, is that everything that animals do, atoms do. In other words, there is nothing that living things do that cannot be understood from the point of view that they are made of atoms acting according to the laws of physics. This was not known from the beginning it took some experimenting and theorizing to suggest this hypothesis, but now it is accepted, and it is the most useful t... 1 notes
notesTherefore all biological and chemical phenomena can be understood from this perspective of physics.
09 JUN 2012 by ideonexus
Biology and Civilization are Analogous
Every breath you draw, every accelerated beat of your heart in the emotional periods of your oratory depend upon highly elaborated physical and chemical reactions and mechanisms which nature has been building up through a million centuries. If one of these mechanisms, which you owe entirely to your animal ancestry, were to be stopped for a single instant, you would fall lifeless on the stage. Not only this, but some of your highest ideals of human fellowship and comradeship were not created i...Folksonomies: evolution civilization
Folksonomies: evolution civilization
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notesIn that our respiration depends on many biological features and our civilization is built on similar foundations.
05 JUN 2012 by ideonexus
Survival of the Fittest Doesn't Apply to Animals in a Soc...
Such biological ideas as the 'survival of the fittest,' whatever their doubtful value in natural science, are utterly useless in attempting to understand society ... The life of a man in society, while it is incidentally a biological fact, has characteristics that are not reducible to biology and must be explained in the distinctive terms of a cultural analysis ... the physical well-being of men is a result of their social organization and not vice versa ... Social improvement is a product of...Folksonomies: society social darwinism
Folksonomies: society social darwinism
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notesWhere all members rely on all other members.
07 MAY 2012 by ideonexus
Optical Illusions are "Brain Failures"
Human perception is rife with ways of getting things wrong. We don't like to admit it, because we have a high opinion of our biology, but it's true. Here's an example: We've all seen drawings that create optical illusions. They're lots of fun, but they should actually be called "brain failures." That's what's happening—a failure of human perception. Show us a few clever drawings, and our brains can't figure out what's going on. We're poor data-taking devices. That's why we have science; tha...
1 They demonstrate how imperfect our senses are and why we need science and scientific instruments to show us the way.
13 APR 2012 by ideonexus
Darwin and Abraham Lincoln Were Born on the Same Day
Charles Darwin (fig. 4.1) was bom on the same day as Abraham Lincoln—February 12,1809. Like Lincoln, he was a liberating force for humankind, but instead of freeing people from slavery, he freed biology from the bondage of supernaturalism. Philosophers of science have long pointed to Darwinian evolution as the greatest scientific revolution within biology, comparable to the role of Newton's or Einstein's revolutionary ideas in physics or the plate tectonics revolution in geology. Before Dar... 1 notes
notesAnd they both freed humans from chains that bound them.
01 FEB 2012 by ideonexus
Biology has Principles and Logic
I took biology in high school and didn't like it at all. It was focused on memorization. ... I didn't appreciate that biology also had principles and logic ... [rather than dealing with a] messy thing called life. It just wasn't organized, and I wanted to stick with the nice pristine sciences of chemistry and physics, where everything made sense. I wish I had learned sooner that biology could be fun as well. 1 notes
notesFrancis Collins describes how he came to love biology after initially dismissing it as rote memorization.
