Holy shit I just had another realization....

The first time this methodology was used was by the music group Apex twin in the album ΔMi−1 = −∂Σn=1NDi[n][Σj∈C{i}Fji[n − 1] + Fexti[[n−1]] Here's a video

This album was released back in the '90s and this image wasn't discovered until 2001 by someone that discovered what look like a demon face at first who shared their findings on a forum but they weren't running it through the correct type of linear extrapolation. Somebody else ran it through correctly and it turned out to be the face of the guy that made the music. It starts at 5:27 on the track. Any interesting cue posts that line up with 527? That's the day after memorial Day