 Given this, his third type of certainty is discussed: what Scotus calls things knowable “through experience”—e.g., that “a certain species of herb is hot”. Such general claims, derived through our experience of numerous instances of the hotness of such herbs, are certain in virtue of the “non-free cause” principle above. Recognizing, however, that inductions don’t hold the same level of assurance that he is claiming for first two types of knowledge, Scotus backs off of his claim a bit later, calling it “the lowest degree of scientific knowledge”, and admitting that such inductions may only tell us that such regularities are “aptitudes”, not certainties (Ordinatio I.3.1.4.110–111).