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by mvladic 2350 days ago
Position your index finger between your eyes and monitor. If you focus on your index finger you will see only one index finger, but if you focus on monitor you will see two index fingers. Now, you need to do the same thing with the monitor, i.e. you need to see two monitors :-) by looking somewhere behind the monitor. If you separate two monitors just enough you will see the shark in 3D.