Learn why the body acts as a “system of systems”...
And with limited knowledge about any of the organs that make up a human body, it was very challenging to work out what was not working and what to do about it...
Oddly, this situation is very similar to how most businesses operate in the 21st century. The only difference is there is NO threat of dying if you seek to master the structure and functioning of a successful business - superior lifestyle, impact and cash.