September 2009 Archives

Tar Sands

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The extraction of oil out of tar sands, for example in Canada (Alberta) is hotly debated. A posting in Science Blogs followed by a debate between advocates and opponents gives a quick introduction to the issues at hand. Apparently there is hardly a trusted source of information available, a sign of large commercial interests and something to hide.

Many people I know advocate that emissions should be compared in two steps: first well-to-tank seperately from tank-to-wheel emissions. Tar sands show why. Apparently the well-to-wheel emissions are "only" 5 to 15 % higher than normal gasoline. 
That doesn't seem much unless you compare this to the effort it takes to reduce emissions by 10 %. If you only compare well-to-tank the picture seems to be much bleaker: 2 to 3 times more emissions. Processing tar sand eats energy.

The really bad thing appears to be the enviromental devastation (land, water, toxic waste) tar sand processing leaves us as a residue. The lakes with toxic waste are enormous.
As you can see over here.



Public debate

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The Internet has given us the power to express ourself. And boy, are we using it in creative ways. Just look at this video about the health care system debate in the USA.
(Listen to the last line.." I want my country back").


Powerful incentive

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It has been difficult to bring the potential effects of climate change close to home. But researchers have found the achilles heel of most men: beer.

The Guardian reports. Czech scientist have found that their famous hop is very sensitive to climate change. Before them researchers in New Zealand have reported the same for barley:

In 2008, a researcher at the National Institute of Water and Atmospheric Research in New Zealand told a conference of beer industry representatives that rising temperatures may threaten beer production. That time it was malting barley that was identified as being particularly vulnerable to rising temperatures. The researcher, Jim Salinger, concluded:

"It will mean either there will be pubs without beer, or the cost of beer will go up."
 
 (hat tip Benoit



The definition of Internet

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We all use the word "Internet" quite often as a sort of container for everything "online". To my surprise a very concise and good definition was adopted in 1995 by the Federal Networking Council (USA) and later adopted by Congress. Even 14 years later a very good definition.

"The Federal Networking Council (FNC) agrees that the following language reflects our definition of the term "Internet".

      • "Internet" refers to the global information system that -- 

      • (i) is logically linked together by a globally unique address space based on the Internet Protocol (IP) or its subsequent extensions/follow-ons;

      • (ii) is able to support communications using the Transmission Control Protocol/Internet Protocol (TCP/IP) suite or its subsequent extensions/follow-ons, and/or other IP-compatible protocols; and 

      • (iii) provides, uses or makes accessible, either publicly or privately, high level services layered on the communications and related infrastructure described herein." 
(hat tip Vint)

Rijksbegroting 2.0

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[ A rant about old thinking: why can't we get a downloadable spreadsheet with our government budget so we can analyze it ourselves?]

Onze regering laat indirect zien dat ze nog "oud" denken. Waar is de online toegankelijke rijksbegroting in bewerkbaar formaat en waar is de discussiesite?

Op de dag na Prinsjesdag staan de media bol met quotes van politici over de rijksbegroting die gisteren gepresenteerd is. De "soundbites" zijn niet van de lucht. Een ritueel dat ik al vele jaren voorbij zie trekken: luchtballonnen en electoraal populaire uitspraken die echter geen enkele zoden aan de dijk zetten (zoals 60 % top tarief voor alle inkomens boven de B-norm) worden afgewisseld met serieuze overwegingen (de staatsschuld stijgt vooral door de investeringen in banken, maar dat geld is niet weg en brengt meer rente op dan de lening kost). Een brij van kwalitatieve kreten.
Voor een normaal mens is het getallenoverzicht helaas ontoegankelijk. Zelf met een spreadsheet in de hand gaan puzzelen en eigen conclusies trekken over wat politici en anderen beweren, die analyses vervolgens delen met anderen is een onbegonnen werk. Want de rijksbegroting (zie hier http://rijksbegroting.minfin.nl/2009/voorbereiding/miljoenennota) is alleen te vinden als document in pdf-formaat.
Wat een ouderwetse benadering van je electoraat! Waarom is de discussie gelimiteerd tot politici, journalisten en lobbyisten?

Het is een kleine moeite om de begroting en achtergrondgetallen in spreadsheet of databaseformaat toegankelijk te maken. Volgens mij zijn er honderden zoniet duizenden mensen in Nederland die daar goed mee om kunnen gaan en zelf gaan puzzelen met de begrotingsgetallen. Eens even rekenen of de quotes van een populist echt ergens over gaan of verdwijnen achter de komma. Je mag verwachten dat die mensen hun rekenpartijen en analyses gaan delen op een openbare website, en dat vele anderen daar met belangstelling kennis van nemen. Dat noem ik controleren van je regering en van je volksvertegenwoordiging.
De rijksbegroting 2.0.

Het wordt tijd dat ook "Den Haag" met zijn denken toetreedt tot deze eeuw...

Design for imperfection

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My geeky self always gets excited when you meet someone who really understands the how and why of architectural choices in technology.

Recently someone explained to me that they had found the reason why some networks (backhaul for mobile, cable networks and others) did not perform as expected. The effective payload transferred can be reduced because the protocol overhead can be atrocious ( building TCP/IP on top of other protocols, which are themselves built on top of another etc.). The observed performance however was much worse than expected.
No, it was something else. A fatal combination of cheap memorychips and the wrong mindset.

The traditional telco mindset is to go for "5 nines": absolute gold-clad reliability, no loss of data whatsoever. The designers of TCP/IP  however designed their protocol for imperfection, expecting imperfection (packet loss, link loss, erratic throughput) and using the imperfection in the algorithms  for congestion control. In other words, if you want to run at maximum (dynamic) performance you have to exceed the limits regularly in order to know where they are.

Deep down in the network gear one uses memory chips as a buffer for incoming data between the network and the application. If the buffer is full, you lose a sent packet. TCP/IP "sees" the loss because the reception of the packet is not acknowledged (ACK) by the receiver to the sender.
But what happens if the traditional telco mindset and the cheap big memory chips of today meet each other? The buffer is set to be very big "so you don't lose packets". Who cares, memory is cheap.
The effect is that sometimes a lot of data can be held waiting in the buffer for the application. No ACK's (acknowledgements) are returned to the sender (yet). TCP goes crazy and thinks a lot of data is lost, reduces the sending rate and starts to retransmit all the data again, bringing the throughput to its knees.

The fix was easy: reduce the buffer to a small size so TCP/IP gets its desired feedback quickly. Performance was excellent again as a result.

The lesson is a deep one about the conceptual difference between striving for perfection on one hand and (elegantly) designing for imperfection on the other hand. 

The difference between control and governance in a nutshell.

The definition of wealth

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The summer is a good time to digest food for thought. The book "The Origin of Wealth" by Eric Beinhocker has proven to be a fertile breeding ground for my mind.

Beinhocker poses the question: what is the origin of our incredible wealth and why does it keep growing?

Classical economic theory does not give an answer. He shows how classical economics is like the medical profession centuries ago. Doctors are doing their best,  struggling to help patients, relying on inadequate and limited diagnostic tools, plausible but incorrect theoretical models and assumptions, rules-of-thumb and common sense developed by trial and error.

Since the 1980's we understand that the economy or "the market' is a specific class of all complex systems that show emergent behavior.  It is clear we have been moving in the direction of more specialization of functions, more diversity in output, more interrelations. Unfortunately our mathematical framework is not able to deal effectively with the non-linear relationships and feedback-mechanisms innate to these systems. A reductionist brute force approach is impossible: the computational effort to calculate all possible states is (near) infinite.

Fortunately computers give us the possibility to simulate these systems and understand more of their behavior.  Like why big integrated organizations or big integrated software systems are so difficult and costly to modify (loss of stability is around the corner).

The interesting question is"  how on earth it is possible for such a complex system to evolve, to reach a stable state and to adapt to changes?

The simulations show that an evolutionary approach (try many different variations simultaneously based on best practices, select the best performing, combine them and create new ones,  try again and repeat ad infinitum) is by far the best.  A system evolves very rapidly to an acceptable ("good enough") state, keeps improving continuously and can adapt quickly to external influences or disruptions. It is far, far better than a Big Man approach: trying to control and steer everything top-down.

So the continuous "tussle" of competing variations under evolutionary pressure is the core driver of our growing wealth. Reduce the tussle and/or reduce the evolutionary pressure :  the growth of our wealth slows down.

The big "If" however is the direction of the evolutionary pressure implied by "select the best performing variations".  What is "better" in a selection ?  Beinhocker argues " bigger GDP, higher productivity, more profit, bigger bonus"  is too limited and can lead to less wealth instead of more. We need an improved definition of "better".

Based on his arguments one can define  an increase in wealth as:

-          An increase in choices and options we have how to lead our lives

o   Given the energy and time we have as individuals

-          Without reducing the choices and options of others , now and in the future

o   Which implies that we have to preserve  our environment

So a better broadband pipe to an unmitigated Internet is an increase of wealth. The end-to-end paradigm results in an increase of wealth.  Price differentiation that gives more options is an increase of wealth, but artificial scarcity to improve profits is a decrease of wealth (Net Neutrality).  Walled gardens are a decrease of wealth .

 More efficiency which results in lower prices increases wealth but the bigger increases are generated by increasing our options: like mobile voice and mobile Internet, or search engines like Google (although they hardly show up in GDP and productivity statistics).

Less "tussle" by reducing competition slows the growth of wealth. Less evolutionary pressure by lowering the bar overall or focusing on the lowest common denominator reduces the growth of wealth: yes, rural areas need broadband but keep the pressure on the front runners to keep on improving.

An inspiring definition of "better", worth to explore further.

The impact of demographics on GHG emissions

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Deutsche Shell has a tradition of publishing a solid and highly respected bi-annual report on the mobility trends and future scenarios for Germany. Their latest report has a hidden twist which only becomes apparent when you start to read the German full report in detail.

They have combined the effect of the introduction of more fuel-efficiĆ«nt technology with the impact of the changing demographics of Germany to create a projection of the trends in CO2 emissions. (Something ECN also incorproates in their general projections for the Netherlands).

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The findings? The age-group below 40 yrs old will drive no more than 20 % of all car-kilometers in 2030, the group above 40 dominates. The percentage of women owning a car will increase, driving up the average number of cars per 1000 inhabitants. (The study does not elaborate further but it is very likely that these changes will have a profound effect on the design of cars and the type of cars sold. Less kid-carriers, more small luxurious vehicles).
The total number of kilometers will grow a little and drop again to current levels.

In an agressive scenario 65 % of all cars sold in 2030 will be hybrid/electrified or powered by something else like hydrogen. The fuel will be partly bio-fuel.

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The combined effect? 38 % less CO2 emissions compared to 2009.

A very interesting chart is depicted below: what are the CO2 emissions if you compare Tank-To-Wheel with Well-To-Wheel?

The answer is clear: if you fill electric cars with "grey" electricity your atre kidding yourself. The CO2 effect is much less than you would expect, you need renewable sources.

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The blatently obvious

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Sometimes you read something that for a few seconds you think is interesting. E.g. a studyscrutinizing 360-degree feedback data on over 11,000 leaders to find out what are the ten characteristics of the worst leaders. Then you think about it a little more and you conclude that all ten are very, very obvious and you probably could have invented this yourself in about 7 minutes. And then you conclude that even the famous Harvard Business Review is not anymore what it used to be. See what you think for yourself (ok, number two is mildly entertaining).

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