Skipping the stuff about substances, it is valid to point out that the best answers on a topic may not be found on the first pages of Google. The top results show the most popular pages, that performed the best SEO, and figured out how to best deliver perceived value to the visitors. The info with the most merit may be on page 89. Kind of like obscure restaurant X may serve the best burger on earth, but McDonalds remains the most popular burger business, with the best delivery system for its product.