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698,508 views
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216,359 views
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1,048,475 views
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224,836 views
2013-02-05
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2013-02-06
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696,330 views
2013-02-07
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72,677 views
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431,766 views
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116,127 views
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107,832 views
2013-02-20
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2013-02-25
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242,432 views
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243,819 views
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466,003 views
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530,847 views
2013-03-04
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61,108 views
2013-03-06
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3,118,435 views
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1,990,611 views
2013-03-13
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958,838 views
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1,455,621 views
2013-03-18
Dear Subscribers...
264,850 views
2013-03-19
Why do we see illusions? - Mark Changizi
125,400 views
2013-03-20