The tone is not necessary, as my mirroring it hopefully demonstrated.
My question was a specific one, which I understand is the result of doing this kind of learning for decades. A similarly direct answer is _not_ a silver platter, and ‘Guess.” is the direct opposite.
If, despite being the author of this article, you feel you cannot answer direct questions, I’d appreciate being directed to reference sources. While less intelligent, they have no agenda towards how I learn.