|A 2012 "matrix style" ethics conference symposium depiction of how human nature will, supposedly, be engineered in the future, humans being embedded at birth with satellite tracking computer chips (similar to how dogs are presently), USB plugs, and some type of logic gate circuitry, among other types of processors. |
In 1948, American self-defined 'human chemist' Thomas Dreier defined the science of “human chemistry”, with the explicit view of people as reactive “human chemicals”, to be one of the branches of human nature, as follows: 
“Human chemistry, the study of how people ‘chemically’ react to one another, is an important branch of the science of human nature.”
Likewise, in English thermodynamicist Alfred Ubbelohde 1946 Time and Thermodynamics, in his opening chapter “Contributions to the Thermodynamics of Scientific Humanism”, he comments: 
“Contributions to the thermodynamics of scientific humanism [concerns] insights on the nature of time, [as in] personal or psychological time, and refers to the unification of the specialized sciences effected by the contributions they make to the proper study of mankind, man’s nature and destiny.”
In this classification scheme, the two dominant branches of human nature would be human thermodynamics and human chemistry, followed in a close third by human physics, a residual, albeit closely intertwined, subject.
Since 2010, American electrochemical engineer Libb Thims has been giving a yearly lecture to bioengineering thermodynamics students (at a noted Chicago university) on an introduction to human chemistry and human thermodynamics, both pure and applied.
In 2012, Wake Forest University, North Carolina, hosted an “Engineering Human Nature”, conference, with speakers including: Patricia Churchland (talk: Braintrust: How Minds Make Morals), Paul Churchland (talk: Rule: the Basis of Morality), Kevin Jung (talk: Explaining Moral Values in a Physical World), David Oderberg, noted “biogenesis, abiogenesis, thermodynamics” scholar (Ѻ), among others.  Hopefully, Jung, in his lecture, will heed the wisdom of German polymath Johann Goethe who rightfully commented over two-hundred years ago:
"The moral symbols of nature are the elective affinities discovered and employed by the great Bergman [and] there is, after all, only one nature."
Likely, however, this will not be the case, by virtue of (a) the large gap in the separation between the two cultures and most-importantly (b) Jung being a professor of Christian Ethics; Bergman being a founder of physical chemistry; Goethe being the founder of human chemistry; the latter two [human physical chemistry], moreover, being inherently at odds with the former [Christianity]; the only resolution of which being the scenario wherein the latter belief system (physical science) completely overthrows the former (Ra theology); the same as in the case when any formerly predominate scientific theory becomes a defunct scientific theory, after being shown fallacious and inconsistent within the modern scientific framework. This overthrow, however, if it is to occur, will no doubt be many generations, centuries, if not millennia to come, to say the least.
1. Dreier, Thomas. (1948). We Human Chemicals: the Knack of Getting Along with Everybody (quote: pgs. 4+21). Updegraff Press.
2. Audi, Robert, Churchland, Patricia, Churchland, Paul, Hurlburt, William, Jung, Kevin, Murphy, Nancey, Oderberg, David, Schweiker, William, and Tollefsen, Christopher. (2012). “Engineering Human Nature” (poster), Benson University Center, Wake Forest University, Winston-Salem, North Carolina, Mar 29.
3. Ubbelohde, Alfred René. (1947). Time and Thermodynamics (ch. I: Contributions to the Thermodynamics of Scientific Humanism, pgs. 1-10) (signed June 1946). Oxford University Press.
● Schilcher, Florian von and Tennant, Neil. (1984). Philosophy, Evolution, and Human Nature (§17: The Thermodynamics of Life, pgs. #). Routledge and Kegan Paul.
● Human nature – Wikipedia.