Each row appears to move. Each row is horizontally aligned but appears to tilt.pic.twitter.com/w0zZcXa0kD
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It depends on the "drifting spines" illusion. http://www.psy.ritsumei.ac.jp/~akitaoka/togetogedriftillusion.html …pic.twitter.com/v04usNwB4l
Tilt illusion is included.
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