It has been argued by several research workers in the past that the distribution of 22 Shrutis is haphazard.
On the contrary, I discovered that the 22 Shrutis were not placed haphazardly at all, but at 'Equiratioal' distances from both the sides (bilaterally) in between Sa-Sa', Sa-Pa, Sa-Ma, and Sa-Komal Ga distances. (Refer to following figures)
Figure shows Bilaterally Equi-Ratioal distribution of Shrutis between S-S'
Figure shows Bilaterally Equi-Ratioal distribution of Shrutis between S-P'
Figure shows Bilaterally Equi-Ratioal distribution of Shrutis between S-M'
Figure shows Bilaterally Equi-Ratioal distribution of Shrutis between S-g1
As the distance Sa:Ati-Komal Ga was equiratioal, this may have been the reason why our ancestors had considered Ati-Komal Ga (and not Shuddha Ga) in the ancient Saptak.
