The correct answer is: "the scientific method".
Galileo Galilei (1564 - 1642) was an Italian astronomer, physicist and engineer, known as the "father of observational astronomy" and "of the scientific method".
He conducted research on speed and velocity, gravity and free fall, the principle of relativity, etc. Through observational methods, he was able to describe the properties of such phenomena and to develop "laws" as a starting point for human understanding of them. He confronted the Roman Inquisition by defending the heliocentrism theory developed by Copernicus.
Educate to change consumption and lifestyles. ...
Invent new water conservation technologies. ...
Recycle wastewater. ...
Improve irrigation and agricultural practices. ...
Appropriately price water. ...
Develop energy efficient desalination plants.
1. Julius Caesar conquered Gaul
The major innovative technique that allowed Henry Ford to produce an automobile that could be manufactured and sold at a reasonable cost was the assembly line, which was used in factories and allowed each employee to focus purely on a single task, instead of multiple ones, which increased efficiency.