Author Topic: Optical Illusions  (Read 16600 times)

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Offline Trojan

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Optical Illusions
« on: October 28, 2010, 05:01:56 am »
Look at the chart below and say the COLOUR of the word,
not the word itself.

Why is it so difficult? Because the right half of your brain
is trying to say the color, while the left side of your brain
is trying to say the word.


 
:-X

Offline Trojan

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Re: Optical Illusions
« Reply #1 on: October 28, 2010, 05:11:23 am »
How many Fs do you see in the text below?


FINISHED FILES ARE THE RE-

SULT OF YEARS OF SCIENTIF-

IC STUDY COMBINED WITH THE

EXPERIENCE OF YEARS.





After you counted the Fs, scroll down...

















How many did you count? 3?

Wrong, there were 6. Don't believe it?
Scroll back up and check. Or scroll down
for the solution...









Our brains are trained to overlook the word OF.

If you saw all 6 Fs right away, you're a genius.

Most people see only 3 Fs. Some people see 4.
« Last Edit: October 28, 2010, 05:16:09 am by Trojan »


Offline Merddin Emrys

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Re: Optical Illusions
« Reply #2 on: October 28, 2010, 06:38:06 am »
amazing I only saw 3  *&(
A pigeon is for life not just Christmas

Offline Nemesis

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Re: Optical Illusions
« Reply #3 on: October 28, 2010, 11:10:30 am »
Me too !, I did the first one OK , but not the Fs :o
Mad, Bad and Dangerous to know.

Offline Merddin Emrys

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A pigeon is for life not just Christmas

Yorkie

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Re: Optical Illusions
« Reply #5 on: October 28, 2010, 12:39:54 pm »
Aoccdrnig to rscheearch at an Elingsh uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoatnt tihng is taht the frist and lsat ltteer is at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit a porbelm. Tihs is bcuseae we do not raed ervey lteter by it slef but the wrod as a wlohe. gdooybe

(Taht wlil fcuk the splelchekcer)

Offline Trojan

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Re: Optical Illusions
« Reply #6 on: November 04, 2010, 03:35:31 am »
Stare at the grey dot in the centre of the circles.

Now move your head forward and backward.
As your head moves closer to your monitor
and then back away from your monitor, the circles
will appear to be moving.

Offline Paddy

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Re: Optical Illusions
« Reply #7 on: November 06, 2010, 01:37:56 am »
.

Offline Trojan

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Re: Optical Illusions
« Reply #8 on: November 06, 2010, 03:04:50 am »
I bet you didn't see a lamp at first.  8)

Yorkie

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Re: Optical Illusions
« Reply #9 on: November 06, 2010, 07:32:26 am »
Of course we did, what do you think we are, perverts?    _))*   _))*

Offline Pendragon

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Re: Optical Illusions
« Reply #10 on: November 08, 2010, 11:51:46 pm »
this does your head in after a bit  _))++

Only hindsight has 20/20 vision
Angiegram - A romantic notion derived from the more mundane truth.

Truth is, everybody is going to hurt you; you just gotta find the ones worth suffering for." -Bob Marley

Offline Pendragon

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Re: Optical Illusions
« Reply #11 on: November 09, 2010, 12:00:19 am »
This is really clever.  Maybe CCBC should hire the artist.
Only hindsight has 20/20 vision
Angiegram - A romantic notion derived from the more mundane truth.

Truth is, everybody is going to hurt you; you just gotta find the ones worth suffering for." -Bob Marley

Offline Ian

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Re: Optical Illusions
« Reply #12 on: November 17, 2010, 03:48:57 pm »
.
Nothing is so firmly believed as that which we least know.  ― Michel de Montaigne

Si hoc legere scis, nimis eruditionis habes.

Offline Ian

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Re: Optical Illusions
« Reply #13 on: November 17, 2010, 03:49:27 pm »
Take the classic visual illusion called the Müller-Lyer illusion - the one with two lines of equal length, where line "a" appears shorter than line "b" simply because of the way the arrows on their ends are oriented (see diagram). Way back in the early 1960s, psychologist Marshall Segall at the University of Iowa in Iowa City led a team testing the susceptibility of people from different cultures to this illusion. They manipulated the length of the two lines until observers judged that they were the same, then recorded this point of subjective equality (PSE) - the extent to which "a" had to be made longer than "b" for the two to be judged equal.

PSE is a measure of the strength of the illusion, and Segall found that students in Evanston, Illinois, were by far the most affected, requiring "a" to be almost 20 per cent longer than "b" before they judged the two equal. The PSE for the aboriginal San people of the Kalahari desert, at the other end of the spectrum, was close to zero. The illusion wasn't even an illusion for them.

This finding is not as trivial as it might at first appear. It implies that a fundamental aspect of perception, which had till then been assumed to be hard-wired and therefore common to everyone, is actually shaped during our development by some aspect of the culture in which we live. Though we are far from understanding this effect, Segall and colleagues suggested a possible explanation: people who grow up among carpentered corners - WEIRD people, for example - might be tuned by the geometry of their world to render them more susceptible to the illusion.

So, if you are WEIRD, you perceive the world oddly. You also have a funny way of describing it. English, the lingua franca of the WEIRD world, relies on a system for locating objects that is egocentric or relative to self, as do other Indo-European languages. So an English speaker might say: "The police officer is to the left of my car". It was assumed for a long time that this was true of all languages - but then exceptions began to crop up. These usually entailed an allocentric frame of reference, describing the location of objects relative to points outside the self, such as the points of the compass ("The police officer is west of the car") or some other object ("The police officer is between the car and the kerb").
Nothing is so firmly believed as that which we least know.  ― Michel de Montaigne

Si hoc legere scis, nimis eruditionis habes.

Offline Ian

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Re: Optical Illusions
« Reply #14 on: November 17, 2010, 03:52:43 pm »
One key factor underpinning morality is fairness. What is considered fair was long thought to be a universal human trait, but Henrich, working with a team of anthropologists and economists, has shown otherwise. The researchers looked for cross-cultural differences in people's sense of fairness using a game in which one person offers a percentage of a known sum of money to another, anonymously, on the condition that if the second person accepts the offer they both keep their respective shares, but if the second person rejects it neither of them gets anything.

The team found huge differences in behaviour. Strikingly, WEIRD people tended to make the largest offers - around 50 per cent - and when WEIRD folk were in the receiver's position, they were most likely to punish low offers with an outright rejection. People from small-scale societies make lower offers and are less likely to punish low offers from others. In other words, it was the people from the small-scale societies who adopted the more rational approach: this was free money, after all
Nothing is so firmly believed as that which we least know.  ― Michel de Montaigne

Si hoc legere scis, nimis eruditionis habes.