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Old January 6th, 2006, 11:10 AM
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Question The Mystery Spot: A mystery no more?

Folks,
This place is about 20 to 25 miles from where Ilive in the Bay Area. I have been there twice, once as a first time visitor and next time as a 'tour-guide' with some out of town friends.

Read on -->

Quote:

A mystery no longer?

By Ken McLaughlin
Mercury News

The Mystery Spot, for decades one of Santa Cruz's most alluring tourist sites, bills itself as a place where the laws of physics and gravity cease to exist.

At least one scientist has attributed the weird goings-on at the site to carbon dioxide seeping up through fissures caused by a landslide or earthquake. Flying saucer aficionados postulate that aliens once left strange metal cones deep below the earth. Others theorize that the bizarre phenomena are caused by a magnetic field, a hole in the ozone layer or an ancient meteorite.

But Bruce Bridgeman, a professor of psychology and psychobiology at the University of California-Santa Cruz, says the Mystery Spot isn't a mystery.
``Scientific psychology,'' he says, can explain all the illusions that visitors encounter there.

That's why Bridgeman uses the Mystery Spot to teach his students how the human brain works -- and deceives.

``The Mystery Spot is all about the power of perception,'' Bridgeman said as he recently joined three students on their first tour of the place.
The spot has been drawing tourists from around the world since 1940, a year after George Prather bought the property, located on a gradually steepening hillside about three miles northeast of downtown Santa Cruz. Tour guides tell this tale:

Prather wanted to build a cabin but became concerned when a surveyor's compass began going haywire. He built the cabin anyway, only to see it slide down the hill into a stand of redwoods -- where it sits today.

The cabin -- said to be at the center of a circular, 150-foot-diameter ``spot'' -- is the main attraction at the site. It is where, as tour guides put it, ``the force'' takes over. Balls appear to roll uphill, people's heights seem to magically change and kids literally climb the walls.
It is also the perfect place for Bridgeman to hold class.

``It would be too expensive to build a whole cabin, so it's cheaper to come down here and use this,'' he said with a dry chuckle. ``It's better than seeing something on a piece of paper or computer screen. The experience completely surrounds you.''

Bridgeman, 61, has been coming to the Mystery Spot since his two adult daughters were Girl Scouts.

Two decades ago, he started bringing his graduate and undergraduate psychology students, with the blessings of Mystery Spot owners.
Seven of Bridgeman's students took part in a formal experiment, the results of which he recently published in the Psychonomic Bulletin and Review. The title of his scholarly paper: ``Influence of Visually Induced Expectation on Perceived Motor Effort: A Visual-Proprioceptive Interaction at the Santa Cruz Mystery Spot.''

In simple terms, it's called the ``size-weight illusion.''

The professor first became intrigued with the concept 10 years ago when a colleague in Germany showed him a weighted matchbox and a large, empty cardboard box of equal weight. When people pick up both objects, they almost invariably perceive the matchbox to be heavier simply because they expect it to be lighter than the larger box.

The same is the case with the 18-pound metal ball hanging from a chain in the Mystery Spot cabin.

The ball hangs vertically from the ceiling. But because the cabin is tilted at a 17-degree angle, the ball appears to be suspended at a gravity-defying angle.

That part is somewhat easy to understand. What's more of a mystery is why people who push the weight one way find it more difficult than pushing it the other way. Answering that question was the focus of Bridgeman's scientific paper.

It is the same reason the matchbox seems heavier, he said. When people push the weighted ball toward the ``visual vertical'' (the way people think the ball should naturally be hanging from the ceiling), they find it is much harder than it looks. So it feels more difficult than pushing the ball in the opposite direction, even though the physical effort is exactly the same, all seven of the students in the experiment found.

All this is important to the field of psychology because ``it shows the limits of one's perception,'' Bridgeman said. ``The essential role of expectation in perception applies to everything -- not just weighted balls in cabins.''

It also shows how the human brain evolved.
Bridgeman said humans almost always make mistakes when judging distances, slopes of hills or other aspects of the layout of the world.

``Perception is not as realistic as it seems,'' he said. ``The job of perception is not to give you an accurate view of the world but something that helps your survival. . . . When you meet a bear in the forest, it's important to run the other way, but the precise position of the bear isn't critical.''

The science of illusion has numerous applications in industry and product development. Just one example: By knowing exactly how the brain distorts reality, engineers can minimize illusions -- and accidents -- when designing roads, highways and cars. In fact, one of Bridgeman's former doctoral students is now a designer for Volkswagen.

Some of his current students, meanwhile, are still struggling with Bridgeman's research debunking ``the force'' at the Mystery Spot.

``It kind of takes the fun out of the place,'' said junior Lily Kuang, 20, one of the students who accompanied Bridgeman on the recent tour. ``The
Mystery Spot is supposed to be cool and mysterious.''

But Steven Macramalla, a graduate psychology student, disagreed that the thrill was gone. ``I get what the professor is saying intellectually,'' said Macramalla, 36. ``But understanding the illusion doesn't diminish it.

The effect is so darn strong. It's pretty fascinating.''
That kind of attitude suits the tour guides and managers at the Mystery Spot just fine. They argue that the spot works whether you believe in mysteries or believe in illusions.

``Bruce is one of the most educated and brilliant people I've ever known,'' said Randall Fertig, who has given tours for eight years. ``Still, just because you understand something doesn't mean you understand it.''

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Professor Bruce Bridgeman, right, has been bringing students to the Mystery Spot for two decades, with the blessings of the Mystery Spot owners.
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File Type: jpg 183332221840.jpg (12.7 KB, 65 views)
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Old January 6th, 2006, 11:13 AM
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Lightbulb Re: The Mystery Spot: A mystery no more?

Here is the scientific explanation.

The second pdf explains the mystery with graphics.
Attached Files
File Type: pdf mystery_spot_analysis_010306.pdf (128.0 KB, 14 views)
File Type: pdf mystery_spot_010406.pdf (265.0 KB, 11 views)
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Old January 6th, 2006, 03:30 PM
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Re: The Mystery Spot: A mystery no more?

By looking at the title, I first thought it was a Laal Mirchi thread
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Old January 6th, 2006, 07:27 PM
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Smile Re: The Mystery Spot: A mystery no more?

Intriguing swell place…

Should be worth a visit.
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Old January 6th, 2006, 08:16 PM
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Re: The Mystery Spot: A mystery no more?

there's one in South Dakota....near Mt. Rushmore....was closed for the season when I was in the area Maybe some other time...!
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Old January 7th, 2006, 01:22 AM
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Re: The Mystery Spot: A mystery no more?

Quote:
Originally Posted by Cooldude
Intriguing swell place…

Should be worth a visit.
Kuch khaas nahi hain yaar. Actually you get a real head ache in this area due to the carbon dioxide or some such gas which seeps up from the many cracks and crevices around this place.
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Old January 7th, 2006, 01:01 PM
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Re: The Mystery Spot: A mystery no more?

swell... worth a visit... intriguing... south... mount... closed... area... cracks... crevices... real head-ache... gas... mystery spot... this thread should be in laal mirchi
kuch kaas nahi yaar
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