Optical illusions...

[DodgyGeezer]

Just happened across the below on FB which I thought was quite interesting

The Thatcher Effect.
This illusion highlights a flaw in how our brains work - we can't process an upside-down face because we are programmed to recognise faces the right way up.
We create a mental map by recognising the face in pieces - eyes, mouth, and nose.
So when we're presented with an upside-down, Thatcherised image, it's not processed properly.
We know it's upside down, but because we so rarely encounter upside-down faces, we haven't evolved to interpret the expressions on them.
The facial features look fine, so our brains assume the rest of the face is as well.
That's why we don't see anything out of the ordinary until we turn the face the ‘right way’ up.

[Einion Yrth]

Excepting it is obvious that eyes and mouth have been inverted, without any daft contortions, or turning the monitor the other way up.

[so called]

My eyes tell me the eyes and mouth have been rotated.
I don't see that as an illusion, only BS.

[Radec]

Call that an optical illusion..pah

Check this out, mind blown.

[bristolbaron]

Radec said:

Call that an optical illusion..pah

Check this out, mind blown.

[remedy]

Tough crowd tonight OP.
I thought it was interesting!

[skeeterm5]

It doesn't work for me, every time I turn my iPad around to view it the picture rights itself 😀

[Mouse Rat]

Looks like a Love Island contestant

[DodgyGeezer]

Mouse Rat said:

Looks like a Love Island contestant

[Tuvra]

This one surprised me when I seen it a few weeks ago (excuse the annoying voice over):-
https://www.youtube.com/watch?v=Cumq48LthCQ&ab...

[sunbeam alpine]

This turned up yesterday on a FB farming group...

[Eric Mc]

Cow - "Hey, you lookin' at me?"

[AngryPartsBloke]

Forced perspective in movies is always a good one

https://www.researchgate.net/figure/The-perspectiv...