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Anonymous
>>301486
Actually that thing is for real, if you close your eye during the count down phase, it won't work.
If you still don't buy it here's one that doesn't change back to black and white till you make it.
http://www.fretmasters.com/illusion/
It's called an afterimage illsuion. I'm pretty sure just about everybody learned it in grade school. But in case you forgotten it, here's the explaination on wiki.
http://en.wikipedia.org/wiki/Afterimage
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