Thursday, 1 September 2016

The honeybee: intelligence in a miniature brain


A previous post referred to the widespread occurrence of intelligence in the natural world, even in brainless amoebae. See Intelligence without brains. It is obvious to everyone that hives have a kind of collective intelligence – a mystery in itself. But the individual insect within the colony also has intelligence, despite its miniature brain, the size of a grass seed.


For every hundred thousand neurons in the human brain (85 billion in all) there is only one in the bee’s equivalent. Here are some examples from the New Scientist in What’s the buzz? by David Robson (24 November 2012). They involve mental feats by individual bees and a growing repertoire of complex behaviour by groups of them. (NB Workers are all females and fall into two groups: foragers and nurses. Drones are males with the sole purpose of mating.)

  • The waggle dance is performed in the hive by a forager to indicate to her fellow foragers the direction and distance of nectar bearing flowers. This is well known. However, while it is performing this dance another foraging bee will sometimes butt the head of the dancer to indicate that it has found a spider at a particular place.

  • Nurse bees perform a wide variety of housekeeping tasks: spring cleaning, mutual grooming, guarding entrances against intruders and air conditioning in hot weather. The air conditioning is achieved by sprinkling water over the honeycomb and using their wings to produce a cool draft.

  • Workers have been observed to have over 60 patterns of behaviour, including 6 different kinds of dance. (Lars Chittkka Current Biology, vol.19, p.R995). This compares with 120 for bottlenose dolphins, 50 for beavers and 30 for rabbits.

  • Bees are aware of the concept of symmetry. If they see a variety of symmetric shapes and a variety of asymmetric shapes, and if they are rewarded only when a symmetric shape is chosen, they will select any shape which has symmetry from a random collection of shapes of all kinds.

  • They can find their way through a maze using abstract signs. They can also understand that different signs mean different things in different situations. They are much better than most primates at this.

     

  • When confronted with a variety of tasks they are able to assess their chances of succeeding and act accordingly. (The evidence for this is not conclusive but it seems likely from experiments to date.)

The article also points out severe limitations of the bee’s intelligence. Visual processing is confined to recognising outlines and only a small part of a scene can be taken in at once. Memory recall is very limited. Nevertheless this is another example of the extraordinary ubiquity of intelligence in the natural world, even in organisms with no neurons or brains as we understand them, such as amoebae. And it is my opinion that this is somehow connected with the process of evolution. Far from being a blind random process of natural selection plus random mutations evolution proceeds by intelligent cooperation and competition. Intelligence is a sustainer and driver of life.

Recently I became aware of plants which were precisely conserving their starch supply through the night using a simple mathematical formula and inputs from both their biological clocks and the number of starch molecules present in the plants.

It is also becoming increasingly apparent that intelligence in nature is not caused by arrangements of matter. These are secondary to something much more fundamental which is beyond our power to discern.

  
 Where it comes from is another question. Humans have an extraordinary variety and amount of reasoning capacity but I believe it is much more than this which makes us fundamentally different from the natural world around us.

Thursday, 18 August 2016

Our precious planet. Part 1: a safe place in the cosmos (updated 2016)



[This is an updated version of the post initially published 3 years ago]
In the next four posts (including this one)  I hope to show the strange combination of circumstances which have led to our civilization. You could dismiss it as the god of chance, since chance can be used to explain anything or nothing. Or you could say it had to be like this or we would not be here to witness it. Fortunately, early man didn't take this defeatest attitude: if he had there would be no science.

As far as I know I’m not saying anything new or cranky here; only trying, as a layman who follows science, to list the factors that make our planet unusual and tailor-made to our requirements. If you can find anything in the following that needs challenging, correcting or clarifying please let me know. 

Part 1 shows how the Earth and Sun are placed in a benign part of a hostile universe and in a region where the 92 elements of the periodic table are available (e.g.carbon,  oxygen, silicon, iron, uranium).

Part 2 will show how the Earth and its companion Moon have provided the conditions needed for biological evolution.

Part 3 will show that our civilization’s development also depended on the properties of the Earth and the Moon.

Part 4 will show how life and civilization could only have emerged not just where they did, but when they did.

 Part 1. A safe place in the cosmos

The universe contains of the order of a hundred billion galaxies which basically fall into three different types: irregular, elliptical and spiral.  Each galaxy contains around a hundred billon stars but only spiral galaxies, like the one in which the Earth and Sun are situated, are likely to have safe zones.

About 25% of galaxies are irregular chaotic swarms of stars with abundant gas and dust. Any planetary system attached to one of these stars is likely to be bathed in radiation hostile to life and subject to a randomly changing interstellar environment in which ‘nearby’ supernovas explode frequently. This is unfortunate since they contain a lot of young stars, not too dissimilar to the Sun, which synthesise the elements (e.g. carbon) needed for life.

Some 65% are elliptical galaxies in which the stars rotate around a central black hole in an ellipse. Because of its oval shaped orbit a star within such a galaxy is periodically brought in close to the black hole and bathed in lethal radiation. In addition, the stars in elliptical galaxies are smaller than the Sun and unable to manufacture the elements needed for life.

The remaining 10% are spiral galaxies, which include our own Milky Way. Although largely hostile to life these have safe regions and the Sun with its companion planets is in one of them. The Sun orbits the galaxy in a rare circular path so that it is not transported too near the central black hole, which give off dangerous radiation.  Also, it is in a ‘young star zone’ where the 92 chemical elements found and needed on Earth have been produced by supernovas (exploding stars) and not in a globular cluster (see below) or other regions of our galaxy where these chemicals are not present.
Supermassive black holes seem to be a normal feature of spiral galaxies but the one at the centre of ours is unusually small (4 million solar masses) and appears to have optimized  the production and distribution of supernovae. Somehow a balance has been achieved between two conflicting requirements for life: the abundance of elements needed for life and a radiation environment which is, by cosmic standards, benign. The halo of dark matter around and at right angles to the Milky Way Galaxy is also appears to be playing a life crucial role

See also ET life should be local

These are densely packed masses of stars within galaxies and any star inside a cluster is unlikely to have life-bearing planets because they are made almost entirely of hydrogen and helium and because the orbit of a star within a cluster is  unstable. Globular clusters were made in the early life of the universe, before most chemical elements were manufactured in large stars and released into interstellar space to form the clouds of matter out of which new stars, planets and life itself are formed. 

Several things about the Sun are optimum for life:
  • It is a  rare G2 yellow dwarf which emits light suitable for photosynthesis (needed to power plant life and produce oxygen) and which is maximally transmitted through water (important for submarine life). 
  • The Sun is also the right size and mass (a large majority of stars are not). The overall stability of a star is closely related to these.
  • It is situated well away from damaging gamma rays and X-rays, i.e.  from gamma-ray bursts, black holes or supernovas.
  • Unlike many stars, it is not part of a multiple star system, which would give us chaotic conditions alien to life.
  • It does not behave violently (by cosmic standards!) in its present quiescent phase which began 50,000 years ago and will end in 50,000 years time. Outside this time window even the relatively stable sun flares up enough to preclude advanced life.
All this adds up to our galaxy, our position in it and the nature of the Sun, providing a rare cosmic opportunity for life to evolve. This combination of circumstances is on top of the extraordinary fine tuning of the physics of the universe to permit life to exist. (How it starts we don't know. We don't even know what it is, i.e what holds the multifarious multitude of diverse, integrated processes within a living organism in being and  what causes continual correction to the millions of errors each day, until death sets in.)
John
Author, 2077: Knights of Peace



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Tuesday, 26 July 2016

Strength through submission to God (Father James)

Father James is a character from the novel 2077: Knights of Peace


Strength from submission
Image result for pen and paper

Our strength in God derives from submission of our ego to God through the Holy Spirit so that His strength may be manifest in us, enabling God’s will to be done on earth as it is in heaven. By submission of our ego we, that is our real greater selves, can participate in God’s cosmic plan for Creation.



How can our submission make a difference to God’s great scheme? 



It is because of the exquisite way in which all of Creation is related, networked and interconnected. ‘No man is an island’ said John Donne. He had no idea how right he was. In fact it applies to every thought, emotion and feeling of every living being, to the life of every creature great and small, to every action of every photon of light, every quark, atom, molecule, emergent system, black hole, galaxy, star and planet. Every event, on whatever scale, ripples out in ways beyond our power to conceive. 



All particles were entangled in the cosmic singularity from which the universe was created: they continue to be related   – past, present and future.

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Lord forgive my claustrophobic prideful non-belief of the past. I might have died of boredom without the music of Baroqo. Where did I think that came from? Perhaps I had to go through non-belief to appreciate your wonder and glory. Praise the Lord!
 

Click  here for the cumulative writings of Father James.