Although world-famous consulting detective Sherlock Holmes prided himself on his deductive prowess, in truth, a great many of his astounding observations resulted from inductive reasoning, by which he arrived at conclusions about events that he did not observe based on the evidence at hand. Similarly, biologists, ecologists and paleontologists strive to describe the world that existed before humans could observe or record it, based only on fossil information. Via induction, they attempt to reconstruct the prevailing climate during biological epochs, the dietary habits and behaviors of extinct animals, and the lineages of creatures for which sparse fossil evidence is available.