Every once in a while I think to myself, "You know you can be pretty smart" and then something or some one comes along to knock me down a peg or twelve.  More often than every once in a while my family and friends think to themselves, "Jon/Husband/Dad/Son sure is a blogging dork.  Look what he's reading/doing/watching."  Well I offer the following as evidence that I'm not that smart and not nearly as dorky as some:

"Menger’s Sponge – named for its inventor Karl Menger and sometimes
wrongly called Sierpinski’s Sponge – was the first three dimensional
fractal that mathematicians became aware of. In 1995 Dr Jeannine
Mosely, a software engineer, set out to build a level 3 Menger Sponge
from business cards. After 9 years of effort, involving hundreds of
folders all over America, the Business Card Menger Sponge was
completed. The resulting object is comprised of 66,048 cards folded
into 8000 interlinked sub-cubes, with the entire surface paneled to
reveal the Level 2 and Level 3 fractal iterations."

I rest my case.