Note that it was already known that FCC was the best periodic packing (740‰ density); this was proven by Gauss. What was not known was whether there was a more

Note that it was already known that FCC was the best periodic packing (740‰ density); this was proven by Gauss. What was not known was whether there was a more efficient aperiodic packing, such as those described in http://en.wikipedia.org/wiki/Quasicrystal http://en.wikipedia.org/wiki/Quasicrystal.