The example above, for instance, features glyphs superficially similar to those found in the notorious CARET documents.
According to the tale related in the CARET material, the apparent "letters" lining the graceful, swirling "blueprints" are actually components of a self-executing software program, an essentially "magical" code that generates physical effects on the environment without visible mechanical assistance. (That the intricate designs that figure so prominently in the CARET material resemble some crop formations is almost certainly deliberate, suggesting a common, presumably extraterrestrial, origin.)
I contend that the asemic writings compiled by The New Post-literate and the tantalizing forms that litter the CARET documents hail from the human subconscious. While making no immediate rational sense, perhaps they are indeed "self-executing" in the sense that they appeal to hidden recesses of the collective psyche.
In this context, a literal attempt to decipher the enigmatic forms that grace at least one recent crop formation is probably doomed to failure. The CARET designs, along with their asemic and cereological counterparts, are fundamentally artistic expressions that masquerade as language so that we might take the time to attempt a proper reading.
Update: Greg Bishop weighs in on the "alien writing" issue here.
[Follow me on Twitter.]