Processed Food

      A few years ago, the CBC ran a program on school lunches. It pointed out that "healthy" choices are difficult because standards were set in the 1940s when the US Army found that it had to reject a large percentage of recruits for being underweight or otherwise malnourished. Modern processed food is too good, it seems, and is making our children obese. That reminded me of the days when a large part of a family's time was spent "putting up" the preserves for the winter. Fruit was dried, or made into compotes, jams, and jellies. Vegetables were pickled or boiled nearly to death and and put into sealers. As these cooled, the air inside contracted and pulled the lids down into an airtight seal.
     One of the major events at Rutzenmoos was the making of sugar syrup and molasses. Mum, Tante Maria, and Frau Schomburg (the pastor’s wife) chopped and sliced sugar beets, then cooked them in the big washing kettle, a copper bowl inset into a purpose built stove, which was normally used to boil the washing in a soap and lye solution as part of the weekly washday rituals. It was of course perfectly sterile. The syrup was a golden colour, the molasses were a nice sticky dark brown. I don’t know whether the syrup was further processed to make sugar, I paid little attention to it. I  concentrated on the molasses, whose taste I can still sense in my oral memory. Wonderful stuff!
     Without processed food, we would have starved.  People nowadays have no idea how important processed food is for survival, and even less how much time was spent in processing it. The food industry made processed food cheap and plentiful. And government made it wholesome: as recently as the 1940s and 50s, governments had to pass regulations to prevent food adulteration, or to enforce safer (and more expensive) processing methods.
     In fact, it was our ancestors' discovery of how to store and process food that led to our eventual dominance of the ecosystem. Until people knew how to grow grains and process other food, they could not live in temperate climates where fresh food is seasonal. True, some people learned how to use technology to live in very inhospitable climate, the Inuit for example; but they survive because, as luck would have it, their prey contains vitamins without which they would die. That, not technology, is what enables the Inuit to live in the Arctic.
     The present day reaction against processed food comes largely from people who have no personal memories of how important processed food is for us. The fact that we can get fresh fruits and vegetables year-round has also helped distract people from this insight.
     There’s another fact, which perhaps should be better known: Human digestive systems do not do a very good job of digesting fresh foods. Cooking is a kind of pre-digestion. It breaks down cell walls in fruits and vegetables, and degrades the proteins in meats, making both more nutritious for us. Without cooking, we would get a good deal less value from the food we eat. True, cooking also destroys some vitamins, but usually there’s more left over than we would get from the uncooked food. The same is true of calories in some cases. Many starchy foods are essentially indigestible until they are cooked.
     Processed food has achieved a bad rep. I think it’s undeserved. In fact, it’s because our food is generally so wholesome and nourishing that the fearful among us fasten on any evidence that suggests food is not as good as it might be,  however trivial the failure is in the larger scheme of things.

Columbo: Publish or Perish (1974)

     Columbo: Publish or Perish (1974) [D: Robert Quine. Peter Falk, Jack Cassidy et al.] Publisher Riley Greenleaf arranges the murder of Allan Mallory, his best selling author, in order to prevent his defection to a rival house, staging an alibi of obnoxious drunkenness for the time of the murder, so that he will appear to be framed. Columbo must break the alibi and discover the link between Greenleaf and hit man Eddie Kane. A split screen is used to show the murder and the alibi at the same time. The acting is barely a cut above wooden, and even Falk seems to sleepwalk through his part. Mickey Spillane (in real life a hard-boiled pulp fiction writer) plays Mallory, and demonstrates that he can’t act. A below average entry in the series, barely complicated enough to fill the 73 minute screen time. *½

Schrödinger’s cat

This is a repost .

 

    Schrödinger’s cat is often used to illustrate the absurdity of quantum mechanics. Schrödinger devised the thought experiment to highlight the paradox implicit in the fact of entanglement. We are told that the cat is neither alive nor dead (or alternatively, that is both alive and dead) until we open the lid of the box, at which point the wave function describing the cat’s state is said to collapse into one or the other state.

     We are told that opening the box is an “observation”, and that it is the act of observation that causes the wave function to collapse. Opening the box kills the cat, or saves its life. Schrödinger devised this absurd thought experiment in order to clarify the paradoxes that appear to arise from entanglement.
     I understand entanglement as follows: two particles interact. They leave each other’s vicinity. The mathematics of quantum mechanics imply that until one of the particles is “observed” or “measured”, we cannot know which particle is in which state. However, when one of the particles is observed to have State S, the other will be in the complementary state S’. The usual interpretation is that until the measurement is done, the particles are in both states, which are said to be superposed on each other. The measurement forces the “collapse” of the indefinite state of the measured particle into one of the two possible states, and somehow this is communicated to the other particle, which collapses into the other state.
      Experiments have been done that show precisely this state of affairs. The question is whether the interpretation of the model is correct: Are the two particles actually in indefinite states until they are measured? Or is it merely the case that we cannot know which particle is in which state until we measure one of them? Note that measurement is an interaction. So the more accurate question is, Are particles that have interacted with each other in some indefinite state until their next interaction? Or is it the case that we cannot know anything about the state of either particle unless and until we arrange some interaction that results in effects large enough that we can both observe those effects and infer the state(s) that caused them?
     I think that QM is ultimately about the limits of knowledge, about what we can and cannot know about particles. Until we measure the particles, we can’t know what the result will be. More importantly, according to Heisenberg’s principle, the act of measuring the particles changes their states. However, measurement or observation is not a privileged interaction. It’s just one of many possible interactions, and it will be followed by another one, and then another one, and so on.
     As I understand it, the Copenhagen interpretation argues that the two particles are in superposed states until they are measured, at which point one of two possible states becomes real in some sense, and thus constrains the next interaction. The many-worlds interpretation argues that whenever the wave function collapses, both possible outcomes become real and ontologically separated from each other. I think both interpretations miss a fundamental point: QM, like any other theory, is a model. A model explains the data that have been observed. It can’t explain what isn’t part of the model. Interpreting QM ontologically or metaphysically is absurd.
     Schrodinger’s cat is alive or dead, as the case may, before we open the box. Our observation doesn’t cause cat to live or die: the radioactive atom that did or did not decay before we opened the box caused that. Suppose the wind blows open the lid. Then the wind is the “observer”, and either the cat’s corpse will stay in the box, or else the living cat will jump out and go on its way.

     In short: Human “observation” is not a privileged interaction.

           
    WEK 2013-11-18/2014-05-22
Update: New Scientist for 07 May 2014 has an article that expresses similar ideas.

Audrey Peterson. Elegy in a Country Graveyard (1990)

     Audrey Peterson. Elegy in a Country Graveyard (1990) Inoffensive fluff, involving a inheritance, a complicated backstory including an orphan musician genius and his governess, a baby-napping, an impostor, and a couple or three other nasties. The characters are pure cardboard, even the narrator barely suffices to carry the plot. And the plot, such as it is, is the only aspect with sufficient interest to keep you reading, albeit mildly bored. The crucial plot point, that a woman is not who she claims to be, is obvious almost as soon as she shows up, the rest is red herrings of an overbright hue, and all in all there isn’t much ‘teccing going on, despite the promise of “An Andrew Quentin and Jane Infield Mystery” on the cover. In other words, it’s a Harlequin Romance with pretensions to criminology, and as such is harmless enough fun. *½

Email encryption (link)

Came across this link to an email encryption system. Sounds good, but I think that the spooks don't need to know what's in the email. If you are a "person of interest", it's enough to know that you are using this service. And the path of the mail can be traced whether it's encrypted or not.

Amir D. Aczel. Why Science Does Not Disprove God (2014)

     Amir D. Aczel. Why Science Does Not Disprove God (2014) Aczel was annoyed by Dawkins “scientific atheism”, and decided to show that Dawkins failed to disprove the existence of God.
     This is a depressing book. The nonsense starts with the title, which is meaningless. You might as well say that science can’t disprove kittens. Of course not. Kittens just are; it’s what you want to say about kittens that can be proven. Or not, depending on what kind of thing you say.
     What Aczel is really trying to prove is that science cannot disprove that God exists. And that’s Aczel’s problem. If “God exists” is the same kind of claim as “Kittens exist”, then we want to know how he knows that. You can point to kittens, and say, “See, that’s what I mean by kittens”, and then you can spend some time agreeing or disagreeing that they’re kinda cute and all.
     But you can’t point to God. Any evidence for God is evidence if and only if you start with the assumption that God exists. In other words, “God exists” is an axiom. Aczel uses all the standard arguments to prove that God exists, but there is so much fuzzy thinking and slip-sliding from one definition or concept to another that it’s never quite clear what Aczel thinks he’s proving or disproving. His central point, that Science can’t disprove the existence of God is valid enough. But he doesn’t actually prove that claim, because he never states clearly what he means by “God exists”. Or what he means by “God”. He agrees that a “literal personal God”, such as the one in the Bible, doesn’t exist, but he doesn’t understand why that’s a valid theological stance. His theology is a muddled mess, and he shifts his grounds for disagreement with Dawkins from one chapter to the next, and often from one paragraph to the next. Worst of all, he doesn’t seem to realise that you can’t prove the existence of God either.
     He starts off by showing that much of the Bible narrative is corroborated by archeology. True. In fact it would be odd if that weren’t so, since all old historical texts are corroborated by archeology. But archeology also shows that much of the biblical narrative is at least exaggerated, and at worst simply wrong. In any case, the historicity of the Bible (or any other sacred text) proves nothing one way or the other about the existence of God.
     He spends a good deal of time arguing that Einstein, who explicitly rejected a personal god, really was religious. He makes the same claim about other scientists, and seems to believe that this supports the notion that a God of some kind exists. But the number of people who believe a proposition has nothing to do with its truth. The fact that other people agree with you doesn’t mean you’re right. And of course it's possible to be religious without holding a belief in a god.
     Much of the rest of the book is a mishmash of two arguments, the argument of the gaps, and the argument from ignorance. For example, he claims that “we” can’t account for the evolution of consciousness, art, symbolic languages, morality, and so on, so Something or Someone must have made it happen. We are different from all other animals. He doesn’t actually say so, but it seems he believes we humans have souls and other animals don’t.
     He accepts the Big Bang, but makes an elementary error: there must have been something before the Big Bang, he says. He even quotes St Augustine on the question, and misunderstands him utterly. Augustine’s point was that it’s meaningless to ask what there was “before” there was time. Aczel rejects the multiverse because the empirical implications appear to be untestable; but then he goes on to talk about those other universes as if they existed in our universe. I could go on, with his take on the improbability argument against the beginning of life; the inconceivability argument against the multiverse and string theory; and so on.
     Even at the end, Aczel still doesn’t explain what he means by “God”, even less what “God exists” might mean. He ends up with a vague pantheism, and pleads the inability of humans to understand everything about the universe as good grounds for accepting the “God hypothesis”. That phrase is itself telling. What Aczel really wants is scientific proof that God exists. He can’t have it, and if he did, he’d have to accept that God is just another phenomenon that can be studied scientifically. Is that really what he wants? I don’t know. He doesn’t seem to be aware that any proof of God’s existence makes that existence contingent. “God exists” would be a theorem, derived from some deeper axioms. What would these be? Or the proof is circular, such as the argument from design, which in effect says that design implies a designer, and therefore a designer implies a design.
     We humans have a strong urge to find or construct or impose meaning on our existence. This is I think a side effect of our ability to make sense of the world well enough that we can plan ahead and control our environment. We tell stories, because stories show cause and effect, and so both teach and comfort us. They teach us to devise actions that will make the story happen as we wish. And they comfort because they assure us that our lives have purpose. As in a story everything happens for a reason, so also in our lives. That’s what we want to believe, and most of us believe that without question.
     Does “God” exist? Tell me what you think “God” is, and I’ll tell you whether I think that god exists.
     This book will reinforce muddled thinking around the question and proves nothing one way or the other. Committed atheists will simple see just another badly reasoned attempt to refute their position. Muddled theists will take comfort that “science” can’t disprove their beliefs. *

Jericho: The Hollow Men (2005)

      The Hollow Men (2005) [D:Tom Shankland. Robert Lindsay, David Troughton et al] A courting couple dies by knife wounds, recalling a series of unsolved similar murders of 30 years earlier. A second murder puts pressure on Jericho and his team.  Personal problems, office politics, and family conflicts make their teamwork less effective than usual, but Det. Sgt. Harvey’s persistence in interviewing “John Bull”, a nutcase serial confessor, leads to the insight that breaks the case: “The murderer is someone like me”, says John Bull; he’s a traumatised WW1 vet. Det. Constable Caldicott almost becomes the murderer’s 6th victim, but Jericho and Harvey arrive soon enough to prevent that, and get Caldicott to his wedding on time. Another satisfyingly complex and nuanced episode. Jericho’s interrupted romance with Juliette, a French prostitute, begins again, so there’s hope this wounded warrior will find some healing. **½