How many triangles are in this image?

[68charger440]

How many triangles can you find in this image?

[Lennard]

5

[68charger440]

Nope.  More than that... exponentially more!

[Charger RT]

I see at least 15
Tim

[Alaskan_TA]

All of them.

[68charger440]

I see at least 15
Tim

keep counting. Many more.

[68charger440]

All of them.

Now that is an answer worth pondering.

[68charger440]

I see at least 15
Tim

It's more than double your guess.

[BLK 68 R/T]

A lot.

[68charger440]

A lot.

I can't argue with that answer.

[Kern Dog]

The answer is similar to the number of women I told the Wife I'd had before her. The answer is "Between three and fifty".

[68charger440]

The answer is similar to the number of women I told the Wife I'd had before her. The answer is "Between three and fifty".

Getting closer.

[JB400]

First guess is 30, but I think I lost count

[Fred]

So far I've counted 20......should I keep going?

[68charger440]

First guess is 30, but I think I lost count

Still not enough.

[alfaitalia]

The answer is 40.

[68charger440]

The answer is 40.

That is the answer most people will accept as correct, but if you want to get a little more esoteric you can get much higher.  Take a single triangle on a white page with a red border on the triangle.  If you look at the white space within the red border, you have one triangle.  Then look at it including the border in red and you have another.  You can then use the individual border lines and the white space in various combinations to create many more, but this method of counting can lead to arguments.

[Lennard]

Nope.  More than that... exponentially more!

You must be looking at something different than me. A triangle is a shape with 3 sides.  There are only 5 triangular shapes in that picture.  

[68charger440]

Here is the answer to a smaller puzzle, but you should get the jist from it. It still doesn't have  the more esoteric answer, but you will get to 40.  Now imagine all of the lines drawn in thick red lines and you may be able to see the esoteric combinations described in one of my prior posts.

[Lennard]

Ah, I was looking for individual triangles. 

[68charger440]

Ah, I was looking for individual triangles. 

The mind is a funny thing.  It can be, and is tricked very often.

[68charger440]

Are both halves of the gray the same color?
Hold your middle finger horizontally in between the two halves of the picture blocking where they come together.  Did the color below your finger change and become the same shade of gray as the color above your finger right before your eyes?

[XH29N0G]

Seen this one:  https://www.youtube.com/watch?v=aFPtc8BVdJk

Watch eyes open, eyes closed, no sound and see what you sense.

Perception is strange, and some illusions are seen by other animals too.  I don't do this, but once went to a talk by a philosopher on illusion

The sound one I posted is the McGurk effect?

[68charger440]

Seen this one:  https://www.youtube.com/watch?v=aFPtc8BVdJk

Watch eyes open, eyes closed, no sound and see what you sense.

Perception is strange, and some illusions are seen by other animals too.  I don't do this, but once went to a talk by a philosopher on illusion

The sound one I posted is the McGurk effect?

Pretty cool...  with my eyes closed I thought he was saying ah ah ah.  With eyes open I thought it was ba ba ba.

[NHCharger]

I kept losing count at 41