Some psychedelic optical illusions...

If you've seen them, you may think they're lame or great. Anyway I like them and so does Mr Nicely. So here goes.

how many grey dots are there actually?

Stare at the + in the middle for some time... is there a green dot in this picture or not?

move your head back and forth

1) stare at the 4 small dots in the centre for 30 secs
2) look at a smooth, single-coloured wall or other surface
3) after a few seconds, blink your eyes a couple of times. What do you see? (or who do you see?)
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FINISHED FILES ARE THE RESULT OF
YEARS OF SCIENTIFIC STUDY
COMBINED WITH  THE EXPERIENCE OF YEARS....

Did you see the F's in the three occurences of the word "OF"?

Don't worry about it, nobody ever finds all six. If you found four, that's excellent.

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CARD TRICK

Well, we're not going to explain everything, but take a good look again at all the cards here and here, and this time try to memorize a few instead of one.
*this trick was attributed to David Copperfield but I seriously doubt if the man had something to do with it.

those things aren't really moving...

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