The document discusses how human perception works and contains examples of optical illusions to demonstrate how perception is not always accurate. It includes passages where the ordering of letters is changed but words can still be read, examples where different images can be seen depending on perspective, and visual illusions where the image changes when viewed from a different angle. The goal is to show that first impressions may be wrong and it is important to look at things from multiple perspectives.

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Human Factors
Human Perception
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AMTC - Human Factors Tutorials/Exercises - ver. Oct 2023 - AG

2. Aviation Maintenance
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 What you see at first may not be the right
thing
 Your mind might confuse one thing with
another
 There might be a view different from what
you ‘see’ at a first glance
 LOOK TWICE BEFORE YOU DECIDE
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Read out loud the text inside
the triangle on the left
More than likely you
said, ‘A bird in the
bush’ ……… but maybe
you failed to see that
the word ‘THE’ is
repeated twice

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What does the word
above read?
In black you can read
the word GOOD, in
white the word EVIL

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Now, what do
you see above?
You may not see it at first, but the white
spaces read the word optical, the blue
landscape reads the word illusion.
Look again! Can you see now why this
painting is called an optical illusion?

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What do you
see here?
This one is
quite tricky. The
word TEACH
reflects as
LEARN

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What do you see here?
You probably read the word ME
in brown, but .... When you look
through ME, you will see YOU!
Look again if you need to !!

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Now, test your Brain. Count every ‘F’ in the
text below
FINISHED FILES ARE THE RESULT OF YEARS OF
SCIENTIFIC STUDY COMBINED WITH THE
EXPERIENCE OF YEARS …
How many did you count? ...
WRONG IF YOU DID NOT COUNT
‘6’ … No joke … READ IT AGAIN
Reason behind this – THE
BRAIN CANNOT PROCESS ‘OF’

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More Brain Stuff ... From Cambridge University.
Try to read the below text.
Olny srmat poelpe can raed tihs. I cdnuol't blveiee taht I cluod
aulaclty uesdnatnrd waht I was rdanieg.
The phaonmneal pweor of the hmuan mnid, aoccdrnig to a
rscheearch at Cmabrigde 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 be in the rghit pclae. The rset can be a taotl
mses and you can sitll raed it wouthit a porbelm.
Tihs is bcuseae the huamn mnid deos not raed ervey lteter by
istlef, but the wrod as a wlohe. Amzanig huh? And I awlyas
tghuhot slpeling was ipmorantt!

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It all depends from which perspective you see things!!

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It all depends from which perspective you see things!!
Where does the shape start?
Where does it finish?

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It all depends from which perspective you see things!!
How many legs does
the elephant has?

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It all depends from which perspective you see things!!

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Do you see an old woman or a young woman in this picture?

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It all depends from which perspective you see things!!

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THE MONKEY BUSINESS ILLUSION!! Let us see this video

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The picture below shows an image of a young woman’s face
What can you see
now?

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Some last images to confuse our mind !!