|Bird call waveform pattern|
|ogham pattern on a Celtic ring|
But, if language did come first, and graphical depictions second, this would imply one of two things: 1) graphical depictions were initially linear, because language is a linear form (OR) graphical depictions developed adjacent to or in parallel with the development of language.
Because not too much research has yet been done to decipher the pictures of the Middle to Upper Paleolithic period regarding the meaning of patterns, this era of cognitive history is still mysterious and filled with unanswered questions.
What I came across today is fascinating, though, moving on the language first, linear depiction first theory. What does an early Celtic language comprised of lines, read right to left, called ogham, and a bird call and morse code all have in common? Each has a linear sequence, depicted as a simple representational pattern. Each has 'on' and 'off' elements. Acoustic patterns require a temporal interval to convey the on/off sequence. A visual pattern represents on/off with proximity and spatial position. The spaces between the lines of the ogham pattern are like the spaces seen in the birdcall waveform pattern and in the morse code alphabet. Take a look for yourself.
It makes me wonder if perhaps bird calls were the initial inspiration for humans to attempt language.