I think it's this one, which was also posted on HN: http://nautil.us/blog/the-math-trick-behind-mp3s-jpegs-and-homer-simpsons-face http://nautil.us/blog/the-ma

I think it's this one, which was also posted on HN: http://nautil.us/blog/the-math-trick-behind-mp3s-jpegs-and-homer-simpsons-face http://nautil.us/blog/the-math-trick-behind-mp3s-jpegs-and-h...