Just before the 15-second mark, the camera pans up. In the background, you see a whiteboard covered in mathematical proofs and a series of dates. The last date written is today's date.

Using a tool like 7-Zip , you begin the extraction. The compression ratio is abnormally high, suggesting the video inside is either very short or contains highly repetitive visual data. As the progress bar crawls, you notice the metadata: the file hasn't been touched since October 15, 2012. 2. The Reveal

When the file finally pops open, you find a single MPEG file simply titled 15.mpg . It’s only 15 seconds long. You hit play.