Anthropomorphism and intentionality abou the purpose or function of things: human psychology involves heavy bias towards though, natural selection is not functionally directed, human-like conscious intent is ascribed to natural selection. Internal (intention of animal) or external (intention of nature: natural selection has no intention just happens, evolution involved the use or disuse of organs or features. Soft inheritance: wrong, characteristics can be acquired during ones lifetime and, physical changes do not occur during lifetime. Typological, essentialist, and transformational thinking: failure to recognize variations plays a role at all. Believes population transforms as a whole passed on to offspring. 5 principles applied to attempt to understand the designs of the: the brain is a physical system human mind. Designed to generate behaviour appropriate to environmental circumstances (response to stimuli) Based on chemicals and firings of neurons: neural circuits were designed by natural selection to solve problems that our ancestors faces.