STS viable path toward Unity?

[zedro]

What happens when the seeming clear, sharp lines that demarcate STO and STS (for example) as separate things starts to dissolve, and they converge into one? Like two circles in a Venn diagram slowly moving toward overlapping more and more. 

Who said it was supposed to be clear? Ignorance will make it seem clear, a progressing student will realize more and more it may not be as the biases are scrutinized, and an adept will eventually experience true clarity, effectively polarizing. You're feelings just demonstrate you are on the path to seeking.

But the clear demarcation line comes down to truly understanding free will and how to/to not infringe on it (negative/positive respectively), it's just that there are no easy/obvious solutions in this current realm/state.