Category: Science & Technology



Because it’s interesting, okay? via


1. System Holism Principle: A system has holistic properties possessed by none of its parts. Each of the system parts has properties not possessed by the system as a whole.

2. Darkness Principle: no system can be known completely.

3. Eighty-Twenty Principle: In any large, complex system, eighty percent of the output will be produced by only twenty percent of the system.

4. Complementarity Law: Any two different perspectives (or models) about a system will reveal truths about that system that are neither entirely independent nor entirely compatible.

5. Hierarchy Principle: Complex natural phenomena are organized in hierarchies with each level made up of several integral systems.

6. Godel’s Incompleteness Theorem: All consistent axiomatic foundations of number theory include undecidable propositions.

7. Entropy – the Second Law of Thermodynamics: In any closed system the differences in energy can only stay the same or decrease over time; or, in any closed system the amount of order (or organization) can never increase and must eventually decrease.

8. Redundancy of Information Theorem: Errors in information transmission can be protected against (to any level of confidence required) by increasing the redundancy in the messages.

9. Redundancy of Resources Principle: Maintenance of stability under conditions of disturbance requires redundancy of critical resources.

10. Redundancy of Potential Command Principle: In any complex decision network, the potential to act effectively is conferred by an adequate concatenation of information.

11. Relaxation time Principle: System stability is possible only if the system’s relaxation time is shorter than the mean time between disturbances.

12. Circular Causality Principle One: Given positive feedback (i.e., a two-part system in which each stimulates any initial change in the other), radically different end states are possible from the same initial conditions.

13. Circular Causality Principle Two: Given negative feedback (i.e., a two-part system in which each part tends to offset any change in the other), the equiibrial state is invariant over a wide range of initial conditions.

14. Feedback dominance theorem: For high gain amplifiers, the feedback dominates the output over wide variations in input.

15. Homeostasis Principle: A system survives only so long as all essential variables are maintained within their physiological limits.

16. Steady State Principle: If a system is in a state of equilibrium (a steady state), then all sub-systems must be in equilibrium. If all sub-systems are in a state of equilibrium, then the system must be in equilibrium.

17. Requisite Variety Law: The control achievable by a given regulatory sub-system over a given system is limited by 1) the variety of the regulator, and 2) the channel capacity between the regulator and the system.

18. Conant-Ashby theorem: Every good regulator of a system must be a model of that system.

19. Self-Organizing Systems Principle: Complex systems organize themselves; the characteristic structural and behavioral patterns in a complex system are primarily a result of the interactions among the system parts.

20. Basins of Stability Principle: Complex systems have basins of stability separated by thresholds of instability. A system “parked” on a ridge will “roll downhill”.

21. Viability Principle: Viability is a function of the balance maintained along two dimensions: 1) autonomy of sub-systems versus integration of the system as a whole, and 2) stability versus adaptation.

22. Recursive System Theorem: If a viable system contains a viable system, then the organizational structure must be recursive; or, in a recursive organizational structure, any viable system contains, and is contained in, a viable system.

Interest in the engineering of cyber-physical information gathering and utilizing systems (CIGUS) has burgeoned in part due to the proliferation of wireless technology [1] and in part due to the growing demand for intelligible information. Such systems are complicated, with hierarchies of interfaces containing underlying complexity. They often involve distributed network sensors. The configuration can be
dynamic, static and adaptive. Increasingly they involve real time collaboration among agents of varying degrees of autonomy. The
interface of high yield systems often hides underlying subsystem complexity which pose new challenges to systems engineering[2].
Systems engineers are expected to provide a common level of communication amongst the domains of expertise that enable research,
development and design of the system to converge. As the domains become highly optimized, the language and models become so specialized that it becomes extremely difficult to communicate across the domains.

::::The Brain on Love::::

When two people become a couple, the brain extends its idea of self to include the other; instead of the slender pronoun “I,” a plural self emerges who can borrow some of the other’s assets and strengths. The brain knows who we are. The immune system knows who we’re not, and it stores pieces of invaders as memory aids. Through lovemaking, or when we pass along a flu or a cold sore, we trade bits of identity with loved ones, and in time we become a sort of chimera. We don’t just get under a mate’s skin, we absorb him or her.

::::The Brain on Love::::

monsanto vs. the welsh people

Professor Dan Shechtman and his amazing Quasicrystals – crystal molecules with strange symmetry. Here he is discussing them:

The moral of the story? Scientists can be just as dogmatic as priests.

Also, change in science comes very very slowly. Good luck with those magic neutrinos boys.

Found In a Skip….

Get the whole lovely glitchy static-laden feedback-drenched avant-garde mess of an album up in this motherfucker!

If you’re a writer – I’m sinatra


From Peanutweeter: Where they take random tweets and merge them with peanut comic strips for maximal luls.

I worked without gloves. It was hard to see. The mirror helps, but it also hinders — after all, it’s showing things backwards. I work mainly by touch. The bleeding is quite heavy, but I take my time — I try to work surely. Opening the peritoneum, I injured the blind gut and had to sew it up. Suddenly it flashed through my mind: there are more injuries here and I didn’t notice them … I grow weaker and weaker, my head starts to spin. Every 4-5 minutes I rest for 20-25 seconds. Finally, here it is, the cursed appendage! With horror I notice the dark stain at its base. That means just a day longer and it would have burst and …

At the worst moment of removing the appendix I flagged: my heart seized up and noticeably slowed; my hands felt like rubber. Well, I thought, it’s going to end badly. And all that was left was removing the appendix … And then I realised that, basically, I was already saved.

via First-person account from surgeon who removed his own appendix – Boing Boing.

The existential crisis for the world’s nuclear industry could hardly have come at a worse moment. The epicentre of the world’s oil supply is disturbingly close to its own systemic crisis as the Gulf erupts in conflict.

World energy crunch as nuclear and oil both go wrong – Telegraph.

Thanks Merryn

Monsanto’s Harvest of Fear

Most Americans know Monsanto because of what it sells to put on our lawns— the ubiquitous weed killer Roundup. What they may not know is that the company now profoundly influences—and one day may virtually control—what we put on our tables. For most of its history Monsanto was a chemical giant, producing some of the most toxic substances ever created, residues from which have left us with some of the most polluted sites on earth. Yet in a little more than a decade, the company has sought to shed its polluted past and morph into something much different and more far-reaching—an “agricultural company” dedicated to making the world “a better place for future generations.” Still, more than one Web log claims to see similarities between Monsanto and the fictional company “U-North” in the movie Michael Clayton, an agribusiness giant accused in a multibillion-dollar lawsuit of selling an herbicide that causes cancer.

via Monsanto’s Harvest of Fear | Politics | Vanity Fair.

thanks William

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