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Illusion Chasers

Illusion Chasers


Illusions, Delusions, and Everyday Deceptions
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Illusion of the week: Satan in the Smoke

The views expressed are those of the author and are not necessarily those of Scientific American.


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Courtesy of Mark D. Phillips

Editor’s note: content reprinted from our Scientific American Min article “A Faithful Resemblance

Twelve years ago today, Photojournalist Mark D. Phillips captured the World Trade Center, engulfed in smoke and flames, seconds after the second plane attack. Unknown to Phillips at the time, the picture, distributed by Associated Press and published on the front pages of several newspapers, contained the face of none other than the Prince of Darkness. A media frenzy ensued, and Phillips, who retired from photojournalism that same day, received more than 30,000 messages related to the “face of evil” in the murky cloud and the feelings it brought forth in the viewers. One year later computer scientists Vladik Kreinovich and Dima Iourinski of the University of Texas at El Paso published a geometric analysis of the face in the photograph, also seen in a different image from CNN. The analysis showed that perturbations in the smoke can consist of horizontal lines (such as the “eyes” and “mouth”) and vertical lines (such as the “nose”) overlaid on a conic surface (the “head”). The scientists concluded that both the background shape (the cone) and the features on the background (horizontal and vertical lines) are naturally explained by the physics and geometry of smoke plumes emanating from fire.

Susana Martinez-Conde About the Author: Susana Martinez-Conde and Stephen L. Macknik are laboratory directors at the Barrow Neurological Institute in Phoenix. Follow on Twitter @illusionchasers.

The views expressed are those of the author and are not necessarily those of Scientific American.





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  1. 1. curiouswavefunction 2:24 pm 09/11/2013

    You see what you want to see.

    Link to this
  2. 2. kaebomb 1:07 am 09/14/2013

    Looks more like George Bush.

    Link to this

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