To tie this new contest to the last one, please show us people using their gray cells (you make the connection ). Show us people solving challenging problems (clarification - "in the act of solving challenging problems"). No restrictions on post-processing.
Submissions will be closed on Tuesday the 30th of November 2010 at 22:22:38 UTC
See Competition Rules at viewtopic.php?f=9&t=44120
Competition History available at viewtopic.php?f=9&t=42757