SI SYSTEM

ENGLISH SYSTEM

• Inventor: British Empire

METRIC SYSTEM

• Inventor: John Wilkins
• When: 1668

U.S. ADVANTAGES

• Saving cost of conversion
• Customary usage
• Cooking
• Culture is use to it

U.S. DISADVANTAGES

• Not universal
• Shipping restrictions
• Based on arbitrary values
• Units can vary with different countries

SI ADVANTAGES

• Easier to learn
• Nearly all countries use
• Easier to convert units

SI DISADVANTAGES

• Not well-suited for working with fractions
• Hard to trade with U.S.
• Many sports are linked to customary units

WHY AMERICA IS ANTI-SI

• Helps understand the history how it came to U.S.
• Saves the cost from switching
• Saves the people from learning a new system

EFFORTS MADE TO ESTABLISH SI IN AMERICA

• Federal agencies were required by legislation

SI SYTEM IN THE WORLD

• Used by 96% of the world's population

INTERESTING FACTS

• Le Système International d'Unités
• SI is little practiced and largely ignored