Wow that is trippy. I looked at the still frames of it and then went back to the spinning picture. I covered half of it with my hand at a time. The right half is moving clockwise, the left moves counterclockwise. Sorry if this is totally obvious to everyone else...I just like analyzing things and breaking them down.
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"Cheer up. Remember what the Monty Python boys say."
"Always look on the bright side of life?"
"No, nobody expects the Spanish Inquisition."