Let X = just about anything (sometimes, “The X” — via a Google search) and you may find a book on that subject:
Diet Code (e.g., Paleo Code)
and so forth.
These can be seen as programmatic approaches to achieving X.
Empathy Code is interesting: There is a book (Kindle ebook) and a recent article (in NYTimes SundayReview) on how exercising empathy can increase one’s own feelings of empathy — i.e., how to increase one’s empathy fitness.
What this means is that it is by “downloading software” for a particular X function and carrying out its instructions routinely can lead to achieving X skill. One doesn’t need philosophical or scientific theory to digest. Just programmatic practice:
All of that about the codes of the “real” world, not to mention the codes of the sciences.
Download “X Code” and execute.