Showing posts with label darwinian evolution. Show all posts
Showing posts with label darwinian evolution. Show all posts

20200930

Mandelbrot set

I've known about the Mandelbrot set and have been familiar with its general shape for years, but have hitherto thought the maths behind it would too hard for the likes of me. Until I started following the Youtube channel mathologer and this video in particular:



Armed with Burkard Polster's simple explanation I wrote a program in VB6. It runs painfully slowly but at least it proves that the concept was not beyond a simple mind like mine. Here are a few screen-shots from my program.  Each one took a minute or so to draw.






If you were presented with images like these without any notion of how they were formed you might conclude that, like the existence of a watch begs a watch-maker, there must have been a designer, and a pretty good one at that because you can zoom into the patterns indefinitely - in short it is a fractal. And yet the Mandelbrot set (which incidentally properly is the black region: the frilly halo is an indication of how close you are to being in the set, and the colours are somewhat arbitrary) comes about because of the simple iterative formula below in which z is a complex number.  If after repeated iterations the modulus of z exceeds 2, then c is not in the set.  And then you plot the set in the complex plane (aka Argand diagram) and that's it. Easy.


I'm reading a book "Homo Lapsus". Whilst I have not yet finished it, the author, who largely accepts the theory of evolution, mentions the evolution of language. Hitherto I had never considered that evolutionists would get their dirty hands on language. Next they'll be onto music which puzzles them because it does not appear to have any evolutionary advantage. She points out that there are many theories as to how language (the skills of which, along with music, sets humans radically apart from all other animals) evolved. Basically no-one knows. But one guy Nome Chomsky believes that language arose instantaneously in humans through a single mutation. That the area in the brain that has been identified as being responsible for language suddenly came about by that mutation. How whacky is that? Niamh's reticence about the evolution of language does not appear to extend to other marvels such as the oft quoted evolution of the human eye. On this subject one site says according to one scientist’s calculations, if the eye improved just 0.005 percent each generation, it would take 364,000 years from eyes to evolve from a patch of light sensitive cells to the complex eyes we have today. But what a facile and nonsensical statement! The only meaning I can thing he attributes to 0.005% is that he wants us to think it is a very small amount.  So now we have: if the eye improved a small amount every 30 years or so it would take...  which is totally meaningless. And having got this far in the book, my author shows herself to be well versed in evolutionary theory but her arguments have so far had the opposite effect to endearing me to that theory. Not that I go along necessarily with the fundamentalist Christian views of a literal six day creation, either. 

I hate the fighting that goes on between evolutionists and the rest of us: apparently the retina is "wired backwards" so that the photo-sensitive rods and cones are behind all the wiring of nerves and I suppose blood vessels. Evolutionists like Dawkins have made fun of intelligent design advocates pointing out that no designer in their right mind would make a retina like that. But more recently scientists are finding out that there is a reason. There are many websites dealing with this for example here.

I hear you asking - so what do I think happened? Well, to be honest, the older I grow the more I realise that I don't know much about anything.  I wasn't there, I don't know anybody that was, and even if I did I couldn't trust their word or my memory.  You may recall that, as a child, I saw an angel standing tall, wings and all, on a chimney opposite my bedroom window. Was it real, a vision, a dream?  I suspect a dream but I don't know. My memory of the angel is vivid enough but of the circumstances I now have no idea. And, other than the experience sticking in my memory, I am not aware of any other benefit it has conferred. 

So much I do not know, but I do know when I smell something wacky. Mind, I don't dismiss an idea just because it is whacky - just that I treat it with the caution it deserves. I don't know about evolution with its millions of years, or about young-earth creation, except that I have noted numerous whackies in both camps, like the Nome Chomsky one above. And should Christians celebrate pagan Christmas? I'm not convinced either way, I don't know.  There is so much fake news on the internet, so many theories about this and that. I don't know what to make of so many, except when I smell a rat. I was brought up in a Christian family and gladly accepted what I was taught about salvation but now, frankly, I am even wobbly about the existence of God himself. I cry constantly for revelation on that one. Sure, I see the arguments (on both sides) but I think a little more is required than consent.

20180904

My first wireless set and stodge



Just as it was my fault for suggesting a flying lesson for Kate's 18'th, so this electronics thing was my father's fault for taking me, at an early age, to Woolworths (the UK sort, not Oz) and buying me a battery, wire and some flash-light bulbs. The rest was history in each case.



At that tender age I had contemplated being a train driver, a plumber, a joiner, an electrician (figuring that electronics was much too complicated). My train driving has been restricted to model railways, otherwise I have done all these.

I have happy childhood memories of powering a flash-light on one side of our wood shed from a battery on the other side via a length of house cable buried under the dirt floor. The concept that energy and information could be carried across that distance fascinated me.

I graduated into electronics when folk started to offload on me ancient and no-longer-working wireless sets, sometimes even TVs. I was smitten by the fancy colours on resistors. And I figured being an electrician was too dangerous anyway, with all those high voltages. I used to disassemble these sets into component level. I wondered greatly at how a volume control could work, as when I connected it in series with a battery and bulb nothing happened.

On one occasion I decided to build my own wireless set. I suppose I might have been 10 years old. I made a sort of box out of Meccano and inside it connected various components from my cache, somewhat randomly. I had a pair of headphones for the output, and doubtless a volume control, an aerial, and two convenient wires which I duly attached to a battery and wonderingly donned the headphones. Sadly I heard nothing. Apparently my random approach to design wasn't the ticket. However, the experience has coloured my view on Darwinian evolution.

The subject of school stodge is related only in so far as I happened, whilst this post was in draft stage, to watch my daughter-in-law L squashing the middle of each of several muffins whilst still in the baking tin with an inverted egg-cup (prior to filling the voids with apple). Which brought back memories.

School dinners were legendary. This was before the time of cafeteria-style-students-have-a-choice days. The choice was simply take it or leave it. Occasionally we would see deliveries of fresh produce and we would wonder how the kitchen could convert all this to what we found on our plates. Having said that some meals were OK - butterscotch tart being one such exception,



although the school variety was served in a rectangular aluminium tray and the colour was not as golden as the photo.

A more common dessert (or pudding) was what we called stodge. Stodge came in various flavours and was served with custard which came in various colours (pink, yellow or brown). Stodge was basically a steamed sponge though "sponge" is a bit of a euphemism. We developed a test for stodge. Having put some in a bowl you would use the convex side of your spoon to compress it. If it collapsed and liquid visibly flowed out then it was stodge. Since school days I have eaten many substances that call themselves "sponge" and none has yielded to this test, yet all school stodge did. It wasn't that it was inedible - it was just... wet.