Sherlock, the dog, takes his job of protecting his owners' home very seriously. he sits at the window all day and barks whenever he perceives a threat. the problem is, often he barks at innocuous things like the rustling of the wind or a car door shutting a block away. in terms of detecting threats, sherlock makes many due to a decision criterion.

The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. this in turn led to the change in diet that included larger amounts of protein. many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. this demonstrates the intimate connection between