|A jack and Jill stylized version of Newton's cradle, illustrating the conceptual model of human physics as the physics, e.g. laws of motion, applied to people.|
See also: HP pioneersThe starting point for the subject of "human physics" is generally considered to be the publication of English science philosopher and political theorist Thomas Hobbes’ 1651 book Leviathan, in which he draws analogies between laws of mechanics and features of society. Hobbes was greatly influenced by the newly forming field of physics and even travelled to Italy to meet the aging physicist Galileo Galilei. 
|A type of human fluid like crowd dynamics simulation model, often employed in human physics, to study designs in emergency situations, e.g. fire, bomb threat, etc.|
"The laws of crowd dynamics have to include the fact that people do not follow the laws of physics; they have a choice in their direction, have no conservation of momentum, and can start and stop at will."