There are, broadly speaking, two kinds of knowledge—analytic and intuitive, explicit and tacit. Analytic knowledge is arrived at by logical deductive thinking, and is a sequential thought process in which each step can be explained and defended. Intuitive knowledge, in contrast, is frequently alogical or nonrational (though not illogical or irrational), and often involves nonconscious mental processes. Though intuitive ways of knowing are essential to both scientific research and scientific medicine, the culture of medicine celebrates only the analytic, evidentiary kind of knowledge, while eschewing intuition as being “nonscientific.” The popularity and prevalence of what is known as evidence-based medicine reflects this bias in favor of the analytic and the explicit. Though the evidence-based approach has contributed greatly to standardizing medical care, favoring treatments for which there is evidence of effectiveness, it has limitations. An overreliance on evidence-based medicine is problematic, because this approach leaves out important factors in the actual practice of clinical medicine such as diagnosis (pattern recognition, hunches), nonverbal cures provided by patients, and the way the doctor–patient relationship bears on patient management and compliance, and because it is not appropriate for dealing with medical conditions that do not lend themselves to study by controlled clinical trials.