The 1st picture took me 10 minutes.
2nd & 3rd took under a minute
4th still looking, flashing to fast giving me a slight headache
5th one within 30 secs


Good stuff

 

my attention span would not allow me to stare at the first one for longer than 10 seconds.

 

The first one is incredibly subtle

 

Weird. The first 3 took me <10 seconds, no lie. The one with the plane took me ~5 minutes!

 

The trick is not to focus on any one part of the image, but to allow the image to sit within your vision but keep your focus a bit behind or in front of it. Eventually you will see it...

 

Kind of like me....

 

lets say someone can't see any of them. What does that mean?

edit: ok i all of them except the bunny one

 

It means your eye movements are too sporadic that, when the image changes to the one missing a certain piece, you still "see" that piece because your mind fills it in as if it were there. But once you do see it, each time the image changes, your mind has already created a "memory" store of that missing segment, so you see that it's missing.