7 December 2015

‘Death needs to be in the air for us to be fully alive.’

Hunting is often a charged and divisive topic in Britain. In Being a Beast, Charles Foster writes bravely and with honesty about what he has experienced as its attractions:
A man with a gun sees, hears, smells and intuits much more than the same man with a bird book and a pair of binoculars. Death needs to be in the air for us to be fully alive. Perhaps this is because many hunts, before we started to go with high velocity weapons after harmless herbivores, carried a serious risk of the hunter dying, and every neuron had to be strained to keep the hunter physically alive. Perhaps it is because death is the one thing that, without any caveats, we will share with the animals; perhaps the first, exhilarating fruit of that perfect reciprocity is an ability to sense the world as the prey does: it sometimes feels as if you’ve got two nervous systems running ecstatically in parallel — yours and the stalked elk’s.
Speculating on the psychological impact of the transformation in the distant past of humans from prey animal to predator, Yuval Noah Harari may light on something true:
Most top predators on the planet are majestic creatures. Millions of years of dominion have filled them with self-confidence. Sapiens by contrast is more like a banana republic dictator. Having so recently been one of the underdogs of the savannah, we are full of fears and anxieties over our position, which makes us doubly cruel and dangerous.

3 December 2015

'Existentially primary'

Neurological and informatic models of subjectivity will no doubt have their uses and values, as did mechanistic models of the world before them. Yet, like their mechanistic forebears, these theories are grounded in an insistence that subjectivity is a secondary phenomenon whose explanation resides in something prior. Chalmers wants to insist, along with Descartes and Locke before him, on the primacy of subjective experience or, as the philosopher Bitbol puts it, ‘that consciousness is existentially primary’. Rather than being something that can be ‘described by us in the third person as if we were separated from it’, Bitbol argues that consciousness ‘is what we dwell in and what we live through in the first person’. This feels reminiscent of what the German philosopher Edmund Husserl in 1936 called the ‘life-world’ of conscious experience, and I suspect that it is where we must look to locate the source of our selves. But I also expect that philosophers and scientists will be arguing the point for centuries to come.
I feel therefore I am Margaret Wertheim

See also Is quantum physics behind your brain’s ability to think?

Photo: Europa and Jupiter's Great Spot, Voyager 1, March 3, 1979. NASA

Sort sol

The switch in recognition is eerie: I go from seeing rushing patterns in the sky to the realization that they are made of thousands of beating hearts and eyes and fragile frames of feather and bone. I watch the cranes scratching their beaks with their toes and think of how the starling flocks that pour into reed beds like grain turn all of a sudden into birds perching on bowed stems, bright-eyed, their feathers spangled with white spots that glow like small stars. I marvel at how confusion can be resolved by focusing on the things from which it is made. The magic of the flocks is this simple switch between geometry and family.
The Human Flock Helen MacDonald

1 December 2015

Shadows of the sky

Thinking about neutrinos, I also came across this:
This light tells us much, but I think in the course of time still more delicate and subtle mediums will be found to exist, and through these we shall see into the shadows of the sky. 
Photo NSF / B. Gudbjartsson via APOD

29 November 2015

'Such a light as we could not have imagined a moment before'

Re-reading Philip Fisher — Wonder is a horizon-effect of the known, the unknown and the unknowable — I was turning it over in contrast with a well-known passage from Walking by Henry David Thoreau:
My desire for knowledge is intermittent; but my desire to bathe my head in atmospheres unknown to my feet is perennial and constant. The highest that we can attain to is not Knowledge, but Sympathy with Intelligence...
Reading on, I came again to a passage which I hadn't thought about in a while:
We had a remarkable sunset one day last November. I was walking in a meadow the source of a small brook, when the sun at last, just before setting, after a cold grey day, reached a clear stratum in the horizon, and the softest brightest morning sun-light fell on the dry grass and on the stems of the trees in the opposite horizon, and on the leaves of the shrub-oaks on the hill-side, while our shadows stretched long over the meadow eastward, as if we were the only motes in its beams. It was such a light as we could not have imagined a moment before, and the air also was so warm and serene that nothing was wanting to make a paradise of that meadow. When we reflected that this was not a solitary phenomenon, never to happen again, but that it would happen forever and ever an infinite number of evenings, and cheer and reassure the latest child that walked there, it was more glorious still.
On this November day, however, there has been no break in the grey, cold and wind.

27 November 2015

A natural compass

Chinese scientists say that they have found a biological compass needle — a rod-shaped complex of proteins that can align with Earth’s weak magnetic field — in the cells of fruit flies. 
The biocompass — whose constituent proteins exist in related forms in other species — could explain a long-standing puzzle: how animals such as birds and insects sense magnetism.
Image: Qin et al. Nature Mater. (2015)

25 November 2015

'Attentiveness can rival the most powerful magnifying lens'

You can look at mosses the same way you can listen deeply to water running over rocks…  
Having words for the forms [of the moss] makes the differences between them so much more obvious. With words at your disposal you can see more clearly… 
I find the language of microscopic description compelling in its clarity. The edge of a leaf is not simply uneven; there is a glossary of specific words for the appearance of a leaf margin: dentate for large, coarse teeth, serrate for a sawblade edge, serrulate if the teeth are fine and even, ciliate for a fringe along the edge. A leaf folded by accordion pleats is plicate, complanate when flattened as if squashed between two pages of a book.
Gathering Moss, Robin Wall Kimmerer, 2003

Image of Barbula fallax via here