Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

10 March 2010

What science is for

In 1972 and 1973 the Pioneer 9 and 10 spacecraft were launched. I remember them well because they had on them this intriguing plaque.

A message to another world
I had a book by Carl Sagan that explained all the symbols 1
 
Forty years on the spacecraft are at the edge of the solar system and are even more intriguing than when they left, for they are not where they are supposed to be: each year they travel a few thousand kilometres less than the laws of physics say they should. This is known as the Pioneer Anomaly

One of the experiments that was designed for Pioneer was to demonstrate that the Law of Gravity works just the same all over the solar system. The unexpected result of experiment suggests - tantalisingly, impossibly -  that perhaps it doesn't.

I love this inspiring passage from the latest report of the scientists investigating the anomaly:
In the short run, knowing the gravitational constant to one more decimal digit of precision or placing even tighter limits on any deviation from Einstein's gravitational theory may seem like painfully nitpicking detail. Yet one must not lose sight of the "big picture". When researchers were measuring the properties of electricity with ever more refined instruments over two hundred years ago, they did not envision continent-spanning power grids, an information economy, or tiny electrical signals reaching us from the unfathomable depths of the outer solar system, sent by manmade machines. They just performed meticulous experiments laying down the laws connecting electricity to magnetism or the electromotive force to chemical reactions. Yet their work paved the way to our modern society.


Similarly, we cannot envision today what research into gravitational science will bring tomorrow. Perhaps one day humankind will harness gravity. Perhaps one day a trip across the solar system using a yet to be devised gravity engine may not seem a bigger deal than crossing an ocean in a jetliner today. Perhaps one day human beings will travel to the stars in spacecraft that no longer need rockets. Who knows? But one thing we know for sure: none of that will happen unless we do a meticulous job today.  Our work, whether it proves the existence of gravity beyond Einstein or just improves the navigation of spacecraft in deep space by accounting for a small thermal recoil force with precision, lays down the foundations that may, one day, lead to such dreams.
 That's what science is for.

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1  From memory: 
- the two circles, top left, represent a hydrogen atom
- the lines, with binary numbers along them, are distances from the sun to major pulsars (and hence our position)
- along the bottom are the planets, with distances to the same scale - our ship came from the third one
- the hand is raised because we come in peace
- the people are the same scale as the picture of the Pioneer craft behind
In 1972 that the couple were naked was a source of great controversy.



23 February 2010

One Drug to Rule them All

 "It is far more powerful than I ever dared to think at first, so powerful that in the end it would utterly overcome anyone of mortal race who possessed it. It would possess him"  - Gandalf, The Fellowship of the Ring

Modafinil tris by Arenamontanus
Professor Barbara Sahakian, speaking at the Royal Institute on Monday, is a softly spoken academic. She's an unlikely-looking herald of a new world order, but that exactly is what she is for in her laboratory in Cambridge she is testing a collection of smart drugs that boost attention, memory and cognition and which, just possibly, could change what it is to be human.

She is disquietingly relaxed about it all; I wasn't certain that she realises the power of what she is helping to unleash.

Life as a Professor of Clinical Neuropsychology is varied. Some days she gives Ritalin to test subjects and monitors their improvement at Tetris; other days she slips the Ring idly on to her finger just for fun, and walks the halls of academia invisible and unseen (far away the Nazgûl stir).


The smart drug of choice at the moment seems to be Modafinil: with few known side effects and seemingly non-addictive it reliably boosts attention, concentration and cognition no one knows exactly how. What's not to like? Her drug-ingesting students are occasionally  asked how it feels. They tell her it feels good, and they scurry far away to make preparations for their exams.

How can you get some? Unfortunately it's prescribed only as a treatment for narcolepsy so it would take some dedicated fakery to get it from your GP, even if she is Private.  If you want it merely to become superhuman (this is called an off-label use) you'd need to buy it from a reliable source on the internet. Alas Professor Sahakian didn't give reveal her favourite, merely observing that when you buy something on the internet you need to be careful, or you might end up with an inert sugar pill. (not unlike the NHS)

It was an intriguing talk.

Smart Drugs offer a world where we all can become brighter and more focussed. Where the effects of old age are staved off, and where no one need fear the terrible loss of self that is dementia. It's an artificial boost for the mind - like plastic surgery for the body, but a lot less dangerous. It's the way we will all live someday: if Modafinil was cheap and legal now it's hard to imagine who wouldn't try it.

And eventually, like the one ring, perhaps it will gain control of us.

"A mortal, Frodo, who keeps one of the Great Rings, does not die, but he does not grow or obtain more life, he merely continues, until at last every minute is a weariness. And if he often uses the Ring to make himself invisible he fades: he becomes in the end invisible permanently, and walks in the twilight under the eye of the dark power that rules the Rings. Yes, sooner or later - later, if he is strong or well-meaning to begin with, but neither strength nor good purpose will last - sooner or later the dark power will devour him"

 ***updated ***

27 July 2009

At least you'll know


Secrets by Avery Edison
So here's a difficult decision for a rationalist, philanthropic, scientifically-minded cycnic: I have been invited to share all my medical records with strangers, at the BIOBANK.

To help science.

On the one hand: the scientist in me whole-heartedly approves of long-term longitudinal studies, and applauds the sheer scale and ambition of this one.

But on the other hand I am of a school that says: be wary of divulging to the government any information you are not absolutely required to.

I wondered what was in it for me. "Well", said Mrs Botogol, "think about it: if they do notice something wrong with you - something else I mean - then they'll tell you, and then at least you'll know"

Oddly enough, when I found out that actually they wouldn't tell me,  I was reassured.

20 May 2009

An abundance of woo

So, on a scale of implausible silliness ranging from reflexology through Cranial Osteopathy Homeopathy to Crystal Therapy... whereabouts would you rank Chiropractic?1


(bones by kevinzim)
On Monday evening I witnessed comedian Dave Gorman bravely inform a packed meeting of anti-chiropractic rationalists that, of all the 'complementary' medicines, Chiropractic has the least woo.  I was surprised, initially, that he didn't get hissed; but the meeting was only partly a demonstration and mostly a love-in in support of Simon Singh, currently snookered in the libel courts; and it's not the done thing to heckle at love-ins, not even the comics.

The British Chiropractic Association may or may not have an abundance of woo, but it has no shortage of sharp lawyers and last week in front of a sympathetic judge (in a still little reported case with far-reaching implications) they won the first round in a libel action against Simon Singh who described the BCA as happily promoting bogus treatments for childhood asthma and ear infections.

Wait a minute, you say, ear infections? are you telling me that chiropractors are in the habit of manipulating children's spines to treat their ear infections?2   Well, yes, that's (if you will) the rub - chiropractic actually treats everything, you see. It's to do with subluxation (at so at least slightly wooy, then).

The meeting was in the basement of Penderel's Oak, a confined, confusing and noisy space designed to intimidate autists, and it was packed with an intriguing mixture of besuited lawyers, TV personalities, journalists, MPs and angry rationalists. And me. I must be getting younger: last year I went to me very first demo, this year to my very first activist meeting.

"What can we do to help?", asked an earnest young woman, with a moleskine "Write about it on your blogs!", said Chris French3 , "Tweet about it! Join our Facebook group!" Yes, this was Activism-2.0.

"I have a blog", I said to my neighbour, an equally earnest young man who was surreptitiously sharing my pint. "Yeah", he said, "we've all got blogs." and he eyed me up disdainfully, "A fiver says you still use blogger", he said, suddenly. "Am I right?".

I eyed him up right back, and next moment we got out our technorati authorities out and slammed them down on the table... his blog was bigger than mine. "I've got my own domain name!", I said "and.."
But he was updating his Facebook status and he wasn't listening..

Nick Cohen raged amusingly against the injustices of the English libel system, Evan Harris talked calmly about the poor understanding of science in parliament, and Brian Cox bounced about and grinned a lot. I wondered if it was too late to give up banking and become a journalist, an MP or a theoretical physiscist (cum TV presenter). Or best of all: a libel plaintiff 4 ?

At the end we heard from Simon Singh himself, and when he was done we all cheered and clapped enthusisatically and felt very glad that it wasn't any of us, cornered into making a principled stand.

While I whooped I gazed around the crowd: The meeing had been quite well publicised and I had no doubt that the audience would contain an undercover chiropractor or two listening out for actionable statements. I wondered if they give themselves away, by not cheering as loudly as the rest.

Looking right round I cricked my neck.


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137th
2wouldn't any normal person use reflexology for that?
3Although a large proportion of the population believes in the paranormal, the evidence presented to support paranormal claims is generally not very convincing in scientific terms" Great Stuff
4 please make defamatory comments below, being sure to leave details of where a writ may be served.