beauty is in the eye of the beholder…

Tuesday, April 9th, 2013
Toby and the news ©www.fionalouisephotography.co.uk

Toby and the news ©www.fionalouisephotography.co.uk

human and dog colour vision ©drsophiayin.com

human and dog colour vision ©drsophiayin.com

I have an ongoing preoccupation with vision – not only ours, but that of other creatures. Vision seems such a dominant and personal way in which we experience the world, that it comes as a surprise – it certainly did to me – to discover how limited it is in comparison to that of other creatures. We actually have more limited perception of colour – for example – than not just birds, but also lizards, amphibians and even many fish. The retinas of most of these animals contain four distinct cones that operate across a portion of the electromagnetic spectrum that reaches into the ultraviolet. Because we evolved from lizards, we should also have these four cones but, alas, the shrew-like creature ‘bottleneck’, from which all mammals are descended, was nocturnal, and for that reason two of the cones were lost. Some primates later acquired a third cone through a mutation of one of the two cones remaining – though this new cone is inferior to the one lost that spanned the red part of the spectrum.

Toby, my new puppy, brought this issue of colour vision into focus (as it were) when I decided to investigate the notion (that seems to be widely held) that dogs are restricted to seeing in black and white. As it turns out, they are not… they see using the standard two mammalian cones, and their vision is roughly equivalent to humans who have red-green colour blindness. The two spectra on the right show the comparison between dog and human vision. Feeling pity for my pooch’s ‘colourless’ view of the world, I happened to notice a wood pigeon striding about outside, in my garden, and could not help recalling that pigeons have five cone colour vision. If that pigeon were to have his colour vision ‘degraded’ to our level, then he would be justified in feeling more pity for our human ‘colourless’ view of the world, than I did for Toby’s.

Imagine what our paintings would look like had we a pigeon’s eyes. Alas I can’t show you a pigeon’s spectrum of colour vision because – well, we simply are no more able to see or imagine those other colours available to a pigeon, than Toby can see red…

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cute puppy distractions…

Tuesday, March 5th, 2013
ricardo with toby the dog

me with Toby

toby the parsons russell

Toby the dog

I have got a new dog, and so there is no ‘proper’ post today.

We’ve been meaning to get a dog since our previous one, Ninja (named for reasons of being a tearaway when a pup) died. She only came to us when she was 13 – an old lady in dog terms. She died just over a year ago at 15. Early in those two years we grew to love her, and we mourned her when she was gone. We have now adopted another Parsons Russell terrier – this one an 8 week old pup we’ve named Toby.

Toby has only been with us since Saturday night, but it already feels as if he’s been part of our lives for ever. Even though he has turned our lives upside down, and has been keeping everyone from sleeping properly with his howling for his mum, he is, of course, an utter delight.

It amazes me that evolution has managed to so shape baby animals that they are incredibly appealing even across species. I wonder if anyone has done a scientific study of ‘cute’…

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cat magic…

Monday, January 21st, 2013

©Barb Whitman’s cat Merlin…

In our culture at least, cats have been associated with magic. In European tradition cats were seen as being a typical ‘familiar’ of a witch or warlock. I would like to suggest that, on the contrary, it is cats who perform magic, and that it is we who are their familiars.

As in many ‘systems’ of magic, cats cast spells primarily by means of vocal utterances. They gaze at their familiar, that is their human, they utter their spell, and magically food appears, or water, or a nice bowl of milk. If the magic does not work the first time, recasting the spell will normally do it. Now you may argue that this is not magic at all, that this is only evidence that the cat has managed to domesticate its human. Consider another example: the cat spell for opening doors. The cat magician, merely gazes at the door that it wants opened, utters its spell, and, miraculously, the door opens. (Sometimes this kind of spell is accompanied by some sorcerous paw gestures.)

No doubt you’re thinking: that’s not magic! Perhaps it is not so from your point of view, but how does it appear to the cat? Imagine, if you will, one of our magician cat’s wilder relatives – a lion, say. What would a lion imagine was going on if, merely by roaring, a gazelle were to fall dead at his feet?

By domesticating us, cats have managed to acquire a means of controlling their world that their forebears (to avoid confusion: cats are not descended from bears) could only dream of. Ah, but then dogs can perform magic too, I hear you say. That’s arguable, though I would say that a dog feels himself to be human (or consider us to be dogs), and so is well aware that a door opening at a woof is not magic at all, but a favour done for him by one of his pack mates. A cat’s view of us is not contaminated by such delusion. It knows that it is a cat and that we are not, and it knows how to do magic…

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happy new year etc…

Monday, January 14th, 2013

me and chopstick, my chicken…

Still haven’t managed to get round to restarting that – admittedly – rather erratic ‘machine’ that is my blogging. I have just written a new blog post, but it’s a tad hefty and needs a bit of editing, and so I hope to publish it tomorrow morning by 11am. In the meantime, may I wish you a very happy 2013…

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vitruvian lobster…

Monday, November 19th, 2012

vitruvian lobster ©http://www.lobstart.com

Thank you Darwin for liberating us from the absurd notion that Man is God’s ultimate and most beautiful creation. When this notion was generally believed – at least in the West with its obsession with Ancient Greece’s perfect white marble nudes (that we now know were painted as gaudily as the carvings that smother Hindu temples) – did no one actually bother to look at other living things? Did no one see butterflies, birds, mammals, fish, cephalopods, jellyfish, the exquisite miniatures that are insects and the myriad other beasts with which we share our planet? In what did our purported supreme beauty consist? Surely it was not colour, nor pattern, nor iridescent plumage. Other species challenge us for beauty of eye, of limb, of skin. Or is it in another Ancient Greek conceit that our divinity lies: the supposed sublime beauty of Man in motion? At least Usain Bolt is doing something we were ‘designed’ to do – but are we also going to claim this triumph for Man in water; as if we somehow outdo the fish, the dolphins, with our splashing.

This attitude that Man is the very centre and the purpose, the crowning glory of Creation can surely only be held by people who live in fear and terror of their own insignificance. I have no doubt that early Man, close as he was – necessarily close – to Nature, did not dare these absurdities. For him animals were his brothers, sometimes even his gods. But then we started to move away from Nature, to get ‘above ourselves’… and, scaling the pinnacle of Creation, we attempted to enthrone ourselves upon its utmost summit. And from there, with imperious gaze, we fancied ourselves the Rulers of Creation, and who can doubt that we still do?

This mania started in fear, and with the thrusting out of our chests to impress each other, but it ends altogether more messily. We put this lie in the mouth of our gods. We use it to justify the way we wish to treat other living creatures as things, as resources. We insist on making Man the measure of Creation. Darwin confronted us with the truth, and it was devastating, and can we doubt the part that trauma played in the darker dramas of the 20th Century?

Still, if you ask anyone who has heard of Darwin, what it is his theory proves about us? many people will point to processions of apes and early humans slowly straightening, eventually becoming the paragon that is Man. We still persist in imagining some gulf between us and other animals. This belief, this thing we seem to need to believe, has become ingrained. No amount of evidence is going to change our minds. Why should it? Even before Darwin we surely saw that we bore the same basic shape as many other animals. We must have noticed how when we copulated it was not some grand act elevated beyond what we saw other animals doing. We must have noticed that this most perfect of God’s creation still needed to go to the toilet… and that if such wasn’t present, we squat to defecate as so many other animals do. No, I don’t believe that Victorians were really shocked to find out that they were descended from apes – I think it was just that it threatened to force them to admit what they must have already suspected, and that whatever trauma we suffered was merely our hysteria at no longer being able to peddle the delusion of our near-angelic status…

Why does this matter? Well, it certainly matters to the creatures who we harm all the time, often deliberately. It matters in that it allows us to decide that increasing the size of our economy is more important than preserving this species or that; each every bit as valuable a leaf on the tree of life as are we. And ultimately it matters – let’s get back to business as usual – because our need to believe that we are ‘special’ makes us blind to the reality that underpins our existence, and we are approaching a time when that reality is threatening to do to us what we have done to so many other species…

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