You can change the direction of the train if you concentrate on it.

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This video shows an endless staircase at the Rochester Institute of Technology in New York that has amazed students and baffled those who’ve tried to figure it out. It’s an architectural marvel that seems to violate the laws of physics and basic logic by looping back into itself.

The Escherian Stairwell is actually [...]

This took me a minute or two to figure out…

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Thanks BigRedKev

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Watch the blinking green dot in the middle of the image and the yellow dots will disappear. Blink and they will come back again.

Thanks BigRedKev

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