One smile of light across the empty face;
One bough of bone across the rooting air,
The substance forked that marrowed the first sun;
And, burning ciphers on the round of space,
Heaven and hell mixed as they spun.
I have every reason to suppose triadic relations are the very fabric of the universe, and for all I know every triadic relation has the potential to serve as a sign relation in one measure or another.
Triadic relations do not evolve from lower species but are present from the beginning. Symbols do not emerge from icons and indices but icons and indices devolve from their generic precursors in the triadic matrix.