Body language the investigators' themselves. The body language of the members of law enforcement might influence the accuracy of eyewitness accounts. The game of poker involves not only an understanding of probability, but also the competence of reading and analyzing the body language of the opponents. A key component of poker is to be able to "cheat" the opponents. To spot these cheats, players must have the ability to spot the individual "ticks" of their opponents. Players also have to look out for signs that an opponent is doing well. Kinesics is the study and interpretation of nonverbal communication related to the
Pre-established harmony Pre-established harmony Gottfried Leibniz's theory of pre-established harmony () is a philosophical theory about causation under which every "substance" affects only itself, but all the substances (both bodies and minds) in the world nevertheless seem to causally interact with each other because they have been programmed by God in advance to "harmonize" with each other. Leibniz's term for these substances was "monads" which he described in a popular work ("Monadology" §7) as "windowless". Leibniz's theory is best known as a solution to the mind–body problem of how mind can interact with the body. Leibniz rejected the idea of physical bodies