Answer
1. Historical and Cultural Inertia
2. Industry and Infrastructure Dependence
Work Step by Step
French scientists developed the SI system, which was predominantly influenced by the Greek numbering system. The U.S. developed its system by deriving additional units from the SI base units.
Two reasons as to why SI units aren't adopted in US are:
1. Historical and Cultural Inertia
The U.S. has used the Imperial system (inches, feet, pounds, etc.) for centuries. These units are deeply embedded in everyday life, education, manufacturing, and commerce. Changing systems would require massive re-education and infrastructure updates, which many view as unnecessary or costly.
2. Industry and Infrastructure Dependence
Many industries—especially construction, engineering, and retail—still rely heavily on Imperial measurements. Tools, machinery, packaging, and product specifications are standardized in non-SI units. Switching to SI could disrupt supply chains and require recalibration of equipment and processes.
