In geology, the sial is the upper layer of the Earth's crust made of rocks rich in silicates and aluminium minerals. It is sometimes equated with the continental crust because it is absent in the wide oceanic basins, but "sial" is a geochemical term rather than a plate tectonic term.
That implies that what one thinks is truth. That is not true, unless that thought is true to that person and no one else. So is there anything that is true for everyone?
NATE - Feeding the cows is a metaphor for feeding the gluttony that SA represents in eating away at your life and becoming a big fat problem. I think, Idk. I've lost my marbles.