Today, worldly singles do something called "hooking up," where they go out on a group date hoping to "hook up" with someone to have sex with later that evening. Apparently, this is a very common type of dating. If you are totally in sync with the ways of this world—if you are a friend of the world—you will not know how to act because your out-of-control emotions will run you amok. Scientists have proven that a person's thought processes have not fully developed until somewhere after age 21. A person younger than that makes decisions based on emotions, and logic does not play a great part. As a person moves from his late teens into his early and mid-twenties, that emotional decision making process eventually is balanced out by a more logical approach, and then the emotions are put under control as a person develops self-control. The sad part is that there are 60 year-olds, and 70 and 80 year-olds who have not developed that self-control over their emotions.
Dating as an institution is a relatively recent phenomenon which has mainly emerged in the last few centuries. From the standpoint of anthropology and sociology, dating is linked with other institutions such as marriage and the family which have also been changing rapidly and which have been subject to many forces, including advances in technology and medicine. As humans societies have evolved from hunter-gatherers into civilized societies, there have been substantial changes in relations between people, with perhaps one of a few remaining biological constants being that both adult women and men must have sexual intercourse for human procreation to happen.