HALL OF MIRRORS

I think it a profound insight that all telescopes involve mirrors. In 1846 this idea was stumbled upon by the obsessive-compulsive painter Alvan G. Clark, when he realized there was more money to be made in selling  telescopes to rich people than in just painting portraits of rich people. And since both involved selling positive self-images, Alvan dropped his brush and took up the polishing rag. It was said this self taught optician could feel imperfections in the glass lenses through his thumb while polishing them. For over a half a century Alvin and his sons ground magnificent telescopes for rich clients who saw funding observatories as grand monuments to their own intellectual beneficence. Five times Alvin Clark and Sons produced lenses for the largest refraction telescopes in the world. But it is another sad truth that making optical telescopes is an ephemeral art form, since over time all glass lenses tell lies. Even a Clark

One of Alvan Clark's most enthusiastic customers was Mr. Percival Lowell, whose mommy gave him a 2 1/4 inch Clark on his fifteenth birthday. Astronomy was the kind of hobby mother and son could share atop their Brookline mansion. At his father's insistence Percival went into business in Japan (above - the tall one without the hat). But he always returned to his first love; astronomy. And as  the end of the 19^th century approached, Percy was attracted by the approach of Mars. 

The more people looked at the red planet, the more it looked like earth. Kepler was the first to realize that Mars was a neighbor of ours. But it was the Dutchman Christiaan Huygens, who drew the first detailed maps of the planet's surface. Then in September of 1877, as the orbits of Earth and Mars converged, Giovanni Schiaparelli used a new telescope and saw what looked like mountain ranges and plains and long mysterious grooves which criss-crossed the planet. He described the grooves in Italian as “canalii”,  a word meaning a channel, or path.  It is sad to point out here, that although Percival Lowell spoke fluent Japanese, he did not speak Italian. 

In 1896, Percival retired from the business world and built his own world class observatory in the mountains, 7,180 feet above Flagstaff, Arizona, atop a peak he named Mars Hill.  Here, for $20,000 (half a million today) Percival installed a 24 inch Clark refracting telescope. Every summer night for the next 23 years, Percival Lowell (above) sat at the bottom of his telescope, observing Mars. During the days he slept in the 24 room mansion he also built on Mars Hill. Being born rich has its advantages, and Percival would have been a fool if he had not taken advantage of his advantages.

And what he saw through the eyepiece of his expensive magical tube was amazing. He saw canals - real canals - more than 180 of them, some of them 4,000 miles long. And he wondered what sort of creatures had constructed such a massive, intricate irrigation system. “Quite possibly, “ he wrote, “such Martian folk are possessed of inventions of which we have not dreamed...Certainly what we see hints at the existence of beings who are in advance of, not behind us, in the journey of life.” 

Percival wrote three books, “Mars”, “Mars and its Canals”, and “Mars as the Abode of :Life”. Each and every book became a best seller. He inspired H.G. Wells to write “War of the Worlds”, as well as inspiring Edgar Rice Burrows, who besides the “Tarzan” series, wrote 13 adventure books centering on Mars. By the year his third book was published, in 1907, Percival Lowell was recognized as the world's expert on the planet Mars. And then, almost over night, Percival's magical red world was deflated by his doppelganger, Mr. George Hale.

George Hale also came from a rich Boston family. But where Percival's father had insisted he attend business school, George's father had sent him to MIT to become a professional astronomer. And in 1908 George opened the lens cap on his new 60” reflector telescope in his new observatory atop California's 5,700 foot high Mount Wilson. And almost the first thing George peered at was Mars, where he found...no canals. Not a one. No matter how hard he looked. It is alleged that George saw an elf in his bedroom, but he saw no canals on Mars.

The photographic proof was conclusive. What Percival had seen as canals proved, when seen through a  newer, bigger, telescope,   to be just an optical illusion, or maybe the blood vessels in the back of Percival's own eye.  Percival had a nervous breakdown. And when he recovered he sought to re-establish his reputation. He took up the search for the the last great mystery in the night sky, the powerful conundrum of Planet X.

According to Percival's own mathematics, there was something very odd about the planets Neptune and Uranus. They were too big, their orbits were odd, Neptune was spinning on its side and they both wobbled. It looked to Percival as as if there had to be another planet further out from the sun, tugging at Uranus and Neptune. He called his suspect Planet X. Percival even calculated Planet X's mass, and he knew exactly where it had to be in the sky, 40 times further out from the sun than the earth.

For ten years Percival and his assistants – okay, mostly his assistants – scoured photographs of the night sky, searching for the tell-tale movement in the star field that would herald the discovery of Planet X. Twice the camera on Percival's 12” Clark took pictures of the moving X.  But the humans who had to examine each one of the thousands of photographs, failed to notice the one dot that had moved slightly. And then,  in 1916, at the age of sixty-one, Percival Lowell suffered a stroke and died. He was buried next to his beloved 12” Clark atop Mars Hill.  But thanks to Percival's fortune, the search for Planet X continued.

In 1930 Clyde Tombaugh found Planet X. And since he was being paid by Percival's endowment, and still using Percival's 12” Clark, Planet X was named using Percival Lowell's initials – PLuto. And isn't it amazing that Planet X became the official IX planet in the solar system? You don't often get to use Roman Numerals in a joke.

Ah, but things were about to get even more amazing. With the refinement of observations of the outer planets a number of new great mysteries appeared in the night sky, as they always do. The more you know the less you know, you know.  You know?

The first thing astronomers realized they did not know was why  two of those three cold blobs of rock and ice circling far out from the Sun– Neptune and Uranus - were so darn massive, too massive to have been formed so far out at the edge of the spinning disc that eventually became the solar system. In 2005 the mystery was solved (we think) at the University of Nice, France.  Neptune and Uranus, said the French astronomers, had actually formed in the inner solar system, and out of rock, like the Earth, Venus and Mars.

Four billion years ago the newly formed gas giants Jupiter and Saturn had turned the inner solar system into pool table on the break -  with the still molten planets and asteroids slamming and careening into and off of each other. This gravitational pin ball game had pulled the moon into a collision with the Earth, and allowed its capture. It had ground up the rocks trying to form a planet into the asteroid belt. And it had flung Uranus and Neptune out of their formation orbits and into their current orbits, leaving behind a lot of oddities as they swerved out into the edge of our solar system.

And that left Pluto. The more people looked at the guardian of the outer realms the odder it looked. Better telescopes, including one in earth orbit, showed it to have less than two tenths of 1% of the mass of the Earth, and to be only about half the size of our moon. That was too small to have perturbed the orbits of Neptune or Uranus. In fact it was even too small to be classified as a planet.

On August 24, 2006 the International Astronomical Union struck Pluto from the list of planets and gave it the new title of "134340 Pluto, dwarf planet".  It seems that for all of Percival Lowell's careful calculations, and for all of Clyde Tombaugh's perseverance, and for all the power of Alvan Clark's thumb,  finding Planet X right where it was supposed to be was...just a coincidence.  It was the human mind which mistook blind luck for a deep cosmological insight,  just as the swelling in the blood vessels behind Percival Lowell's eye had built the canals of Mars.

It makes me wonder how we can ever really be certain we are certain of anything. And it seems that no matter how big our telescopes become, we will always looking into a mirror.

- 30 -

EFFECTING CLEVER HANS

"I can always tell which is the front end of a horse, but beyond that, my art is not above the ordinary."

Mark Twain

I retain a few doubts about Hans. I agree that he was clever, but how clever was he, really? Hans willingly cooperated with the man who proved he was as dumb as a horse. That was not very smart. And if Hans could actually preform basic math, why don't we see more horses working in banks? Sure, Hans might have been an equine genius, even capable of reading human minds, but what are the odds the only genius human- mind-reading horse would be bought by a retired gym teacher who just happened to be anxious to prove that horses could memorize the multiplication tables? Perhaps I should rein myself in here, and start at the beginning.

"Horses do think. Not very deeply, perhaps, but enough to get you into a lot of trouble."

Patricia Jacobson and Marcia Hayes - "A Horse Around the House"

Right out of the gate, Hans just looked smart (above). He was handsome, sleek, athletic and big, almost a thousand pounds and five and a half feet high at the shoulders. His breed had been founded by Count Orlov who crossed Russian mares with Arabian stallions, to produce spirited trotters. And then Count Rostophin threw in three oriental stallions to breed gentle, empathetic riding horses. So popular was the breed that by 1866 nearly half of all horses on Russian stud farms were Orlovs. And by the end of the 19^th century, they were even being sold in Europe.

"Small children are convinced that ponies deserve to see the inside of the house."

Maya Patel

The popularity of the Orlov is explained by the web site, InfoHorse.com (http://www.infohorse.com/ShowAd.asp?id=3693) ; “Possessed of amazing intelligence, they learn quickly and remember easily with few repetitions. There is often an uncanny understanding of what is wanted and needed of them....They can become extremely sensitive to the moods and emotions of their riders/owners, even reflecting them in self-carriage. Under saddle this makes for a partner of such willingness and awareness that traditional (dressage) exercises become poetry.”

"Horses are uncomfortable in the middle and dangerous at both ends."

Ian Fleming - Sunday Times of London, October 9, 1966

Which brings us to Wilhelm von Osten (above), a retired, grouchy, grumpy Berlin prep school mathematics teacher who believed that animal intelligence was sorely underrated. Beginning in the 1880's he attempted to teach simple math to a cat. The feline did not care scratch for his efforts, so von Osten switched his subject to a bear. The Ursula proved a bear market for von Osten's educational techniques. So in 1888 he bought a pony, whom he named Hans. Von Osten was giddy when, after a few weeks effort, he wrote the number three on a blackboard and Hans tapped his right hoof three times. It seemed clear, to him at least, that he had harnessed the genius in the young stallion.

"It's always been and always will be the same in the world: The horse does the work and the coachman is tipped"

Old proverb

Von Osten now had the bit between his teeth. He asked Hans for the sum of three plus two, and the black beauty tapped his hoof five times. Eventually Hans was even figuring square roots and working with fractions. Hans even read a calendar, answering “, "If the eighth day of the month comes on a Tuesday, what is the date of the following Friday?” - something I would have trouble with. But there was more. Asked to identify a member of the crowd , Hans was able to tap out a name, using a complicated code chart, even though no one had told the horse the human's name. But after years of giving such public demonstrations before enthusiastic crowds, von Osten grew frustrated by official indifference. So, in the summer of 1902, he advertised for sale his “beautiful, gentle 7 year old stallion”, in a military newspaper. In fact Hans was not seven, and he was not really for sale, but the ad did mention, “He distinguishes ten colors, reads, knows the four arithmetic operations, etc.” That elicited the sought after response from cavalry officers, who stampeded to von Osten's house. They came prepared to mock but left impressed. Because of this growing support by such a respected segment of German society, within two years even the Minister for Education was singing Han's (and of course, von Osten's) praises.

“You can lead a horse to water, but you can't make him participate in synchronized diving.”

Cuthbert Soup - “Another Whole 'Nother Story”

The mockery poured upon the Minister for those statements finally achieved Von Osten's goal. A panel of 13 “experts” was herded together; a veterinarian, a circus manager, a Cavalry officer, the Director of the Berlin Zoo, some school teachers and the psychologist Carl Stumpf, The panel ran Hans through his paces, and when faced with Han's 89.9% accuracy, came to the unanimous conclusion there were no tricks involved. That declaration even made the New York Times chuckle (“Berlin’s Wonderful Horse. He Can Do Almost Everything but Talk.”) The German government was now facing a night-mare of public humiliation. So before declaring himself mentally un-stable, Stumpf decided to go one step further. He asked his assistant, Oskar Pfungst, to put Hans through his paces.

I'd rather have a goddamn horse. A horse is at least human, for God's sake.

J.D. Salinger - “The Catcher in the Rye”

Pfungst designed experiments for Dr. Stumpf, and he now laid down four restrictions to begin a series of tests for Hans, to be conducted in the courtyard of the Psychological Institute of the University of Berlin. First Pfungst cut von Osten right out the herd. Then he put blinders on Hans, so he could only see the human asking the question. And then he varied whether the questioner knew the answer or not. The key turned out to this last bit. When the human was ignorant of the correct answer, Han's winning percentage dropped to just 6%. So Hans was only as smart as the human asking the question. That lead to testing the questioner. By closely watching the humans and not the horse, Pfungst found they were subtly and unconsciously tensing their muscles as Han's approached the correct answer, and showed a similar relaxation immediately afterward. Pfungst's theory was that Hans was watching for the same muscle clues he expected when a human was riding on his back. In his December 1904 report – "Clever Hans (the horse of Mr. von Osten) A Contribution To Experimental Animal And Human Psychology" - Plungst revealed, he could now “call forth at will all the various reactions of the horse by making the proper kind of voluntary movements, without asking the relevant question.” .

"Horse sense is the thing a horse has, which keeps it from betting on people."

W.C. Fields

But for me, von Osten's mane arguments were finally reduced to horse d'oeuvres when Pfungst used von Osten's techniques to train his own dog, Nora, to duplicate all of Hans' feats. Of course, having hitched his reputation to his halter-ego Hans, Von Osten bridled at the suggestion he was not a genius horse – Hans, that is. So he bolted for the exit - von Osten did, that is. He told a newspaper “one can hardly see in these experiments more than a kind of scholarly jest....” He retreated to his families' estate in Prussia. And there the bitter old man died, on July 3, 1909. He was buried at the Church of Zion (Zionskirchhof) back in Berlin

"If the world was truly a rational place, men would ride sidesaddle."

Rita Mae Brown

Hans, still as clever as ever, was adopted by Karl Krall, a wealthy jeweler in the west German town of Elberfeld. Krall was determined to prove Hans a genius, and the stallion continued to spend hours each day, now with two stall mates,  standing through interminable instruction and testing sessions. The horse genius was last heard of in 1916 when he was drafted, and probably died pulling wagons in World War One. Meanwhile, the "Clever Hans (in German “Kluge Hans”) Effect", still plagues researchers by producing false positive results by search, drug and bomb sniffing dogs, dolphins and primates used in language research and even human sufferers of autism. And I suspect it also occurs in contestants on American Idol.

"There are only two emotions that belong in the saddle; one is a sense of humor and the other is patience."

John Lyons

- 30 -

HALL OF MIRRORS

I think it a profound insight that all telescopes involve mirrors. In 1846 this idea was stumbled upon by the obsessive-compulsive painter Alvan G. Clark, when he realized there was more money to be made in selling  telescopes to rich people than in just painting portraits of rich people. And since both involved selling positive self-images, Alvan dropped his brush and took up the polishing rag. It was said this self taught optician could feel imperfections in the glass lenses through his thumb while polishing them. For over a half a century Alvin and his sons ground magnificent telescopes for rich clients who saw funding observatories as grand monuments to their own intellectual beneficence. Five times Alvin Clark and Sons produced lenses for the largest refraction telescopes in the world. But it is another sad truth that making optical telescopes is an ephemeral art form, since all lenses tell lies. Even a Clark.

One of Alvan Clark's most enthusiastic customers was Mr. Percival Lowell, whose mommy gave him a 2 1/4 inch Clark on his fifteenth birthday. Astronomy was the kind of hobby mother and son could share atop their Brookline mansion. At his father's insistence Percival went into business in Japan (above - the tall one without the hat). But he always returned to his first love; astronomy. And as  the end of the 19^th century approached, Percy was attracted by the approach of Mars. 

The more people looked at the red planet, the more it looked like earth. Kepler was the first to realize that Mars was a neighbor of ours. But it was the Dutchman Christiaan Huygens, who drew the first detailed maps of the planet's surface. Then in September of 1877, as the orbits of Earth and Mars converged, Giovanni Schiaparelli used a new telescope and saw what looked like mountain ranges and plains and long mysterious grooves which criss-crossed the planet. He described the grooves in Italian as “canalii”,  a word meaning a channel, or path.  It is sad to point out here, that although Percival Lowell spoke fluent Japanese, he did not speak Italian. 

In 1896, Percival retired from the business world and built his own world class observatory in the mountains, 7,180 feet above Flagstaff, Arizona, atop a peak he named Mars Hill.  Here, for $20,000 (half a million today) Percival installed a 24 inch Clark refracting telescope. Every summer night for the next 23 years, Percival Lowell (above) sat at the bottom of his telescope, observing Mars. During the days he slept in the 24 room mansion he also built on Mars Hill. Being born rich has its advantages, and Percival would have been a fool if he had not taken advantage of his advantages.

And what he saw through the eyepiece of his expensive magical tube was amazing. He saw canals - real canals - more than 180 of them, some of them 4,000 miles long. And he wondered what sort of creatures had constructed such a massive, intricate irrigation system. “Quite possibly, “ he wrote, “such Martian folk are possessed of inventions of which we have not dreamed...Certainly what we see hints at the existence of beings who are in advance of, not behind us, in the journey of life.” 

Percival wrote three books, “Mars”, “Mars and its Canals”, and “Mars as the Abode of :Life”. Each and every book became a best seller. He inspired H.G. Wells to write “War of the Worlds”, as well as inspiring Edgar Rice Burrows, who besides the “Tarzan” series, wrote 13 adventure books centering on Mars. By the year his third book was published, in 1907, Percival Lowell was recognized as the world's expert on the planet Mars. And then, almost over night, Percival's magical red world was deflated by his doppelganger, Mr. George Hale.

George Hale also came from a rich Boston family. But where Percival's father had insisted he attend business school, George's father had sent him to MIT to become a professional astronomer. And in 1908 George opened the lens cap on his new 60” reflector telescope in his new observatory atop California's 5,700 foot high Mount Wilson. And almost the first thing George peered at was Mars, where he found...no canals. Not a one. No matter how hard he looked. It is alleged that George saw an elf in his bedroom, but he saw no canals on Mars.

The photographic proof was conclusive. What Percival had seen as canals proved, when seen through a  newer, bigger, telescope,  proved to be just an optical illusion, or maybe the blood vessels in the back of Percival's own eye.  Percival had a nervous breakdown. And when he recovered he sought to re-establish his reputation. He took up the search for the the last great mystery in the night sky, the powerful conundrum of Planet X.

According to Percival's own mathematics, there was something very odd about the planets Neptune and Uranus. They were too big, their orbits were odd, Neptune was spinning on its side and they both wobbled. It looked to Percival as as if there had to be another planet further out from the sun, tugging at Uranus and Neptune. He called his suspect Planet X. Percival even calculated Planet X's mass, and he knew exactly where it had to be in the sky, 40 times further out from the sun than the earth.

For ten years Percival and his assistants – okay, mostly his assistants – scoured photographs of the night sky, searching for the tell-tale movement in the star field that would herald the discovery of Planet X. Twice the camera on Percival's 12” Clark took pictures of the moving X.  But the humans who had to examine each one of the thousands of photographs, failed to notice the one dot that had moved slightly. And then,  in 1916, at the age of sixty-one, Percival Lowell suffered a stroke and died. He was buried next to his beloved 12” Clark atop Mars Hill.  But thanks to Percival's fortune, the search for Planet X continued.

In 1930 Clyde Tombaugh found Planet X. And since he was being paid by Percival's endowment, and still using Percival's 12” Clark, Planet X was named using Percival Lowell's initials – PLuto. And isn't it amazing that Planet X became the official IX planet in the solar system? You don't often get to use Roman Numerals in a joke.

Ah, but things were about to get even more amazing. With the refinement of observations of the outer planets a number of new great mysteries appeared in the night sky, as they always do. The more you know the less you know, you know.  You know?

The first thing astronomers realized they did not know was why  two of those three cold blobs of rock and ice circling far out from the Sun– Neptune and Uranus - were so darn massive, too massive to have been formed so far out at the edge of the spinning disc that eventually became the solar system. In 2005 the mystery was solved (we think) at the University of Nice, France.  Neptune and Uranus, said the French astronomers, had actually formed in the inner solar system, and out of rock, like the Earth, Venus and Mars.

Four billion years ago the newly formed gas giants Jupiter and Saturn had turned the inner solar system into pool table on the break -  with the still molten planets and asteroids slamming and careening into and off of each other. This gravitational pin ball game had pulled the moon into a collision with the Earth, and allowed its capture. It had ground up the rocks trying to form a planet into the asteroid belt. And it had flung Uranus and Neptune out of their formation orbits and into their current orbits, leaving behind a lot of oddities as they swerved out into the edge of our solar system.

And that left Pluto. The more people looked at the guardian of the outer realms the odder it looked. Better telescopes, including one in earth orbit, showed it to have less than two tenths of 1% of the mass of the Earth, and to be only about half the size of our moon. That was too small to have perturbed the orbits of Neptune or Uranus. In fact it was even too small to be classified as a planet.

On August 24, 2006 the International Astronomical Union struck Pluto from the list of planets and gave it the new title of "134340 Pluto, dwarf planet".  It seems that for all of Percival Lowell's careful calculations, and for all of Clyde Tombaugh's perseverance, and for all the power of Alvan Clark's thumb,  finding Planet X right where it was supposed to be was...just a coincidence.  It was the human mind which mistook blind luck for a deep cosmological insight,  just as the swelling in the blood vessels behind Percival Lowell's eye had built the canals of Mars.

It makes me wonder how we can ever really be certain we are certain of anything. And it seems that no matter how big our telescopes become, we will always looking into a mirror.

- 30 -