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The '''metric system''' is a system of measurement developed during the [[French Revolution]]'s anti-religious [[The Cult of Reason|Cult of Reason]]<ref>However, according to researcher Pat Norton, the system was described a century earlier by Englishman John Wilkins.  [http://abc.net.au/news/stories/2007/07/15/1978802.htm Australian Broadcasting Corporation], 15 July 2007 (retrieved 15 July 2007.)</ref> and based on permanent natural standards rather than on royal decrees. [[Joseph-Louis Lagrange]] headed the Revolutionary weights-and-measures committee that developed it and set its initial definitions.

The '''metric system''' is a system of measurement developed during the [[French Revolution]]'s anti-religious [[The Cult of Reason|Cult of Reason]]<ref>However, according to researcher Pat Norton, the system was described a century earlier by Englishman John Wilkins.  [http://abc.net.au/news/stories/2007/07/15/1978802.htm Australian Broadcasting Corporation], 15 July 2007 (retrieved 15 July 2007.)</ref> and based on permanent natural standards rather than on royal decrees. [[Joseph-Louis Lagrange]] headed the Revolutionary weights-and-measures committee that developed it and set its initial definitions. Because of its background and rationale behind its existence, the metric system is an embodiment of [[liberal]] and [[globalist]] values.<ref>[https://video.foxnews.com/v/6045110807001/?playlist_id=5198073478001#sp=show-clips Can the US continue to stand alone against the metric system?] ''Fox News Video''. June 5, 2019. Retrieved June 7, 2019.</ref>

Traditional systems of measurement all used standard lengths of parts of the human body, or standard distances that a human might walk. The metric system, by contrast, initially used the [[Earth]] itself as the ultimate standard.

Traditional systems of measurement all used standard lengths of parts of the human body, or standard distances that a human might walk. The metric system, by contrast, initially, and inaccurately, used the [[Earth]] itself as the ultimate standard.

In 1878 the [[United States]] signed the treaty called the ''Convention du Mètre.'' Since then, ''both'' the metric system and the [[United States customary units]] (miles, inches, pounds, etc.) have had legal status in the US. US Customary units are in fact defined by reference to metric units; that is, legally, an inch is ''defined'' to be exactly 25.4 millimeters.

In 1878 the [[United States]] signed the treaty called the ''Convention du Mètre.'' Since then, ''both'' the metric system and the [[United States customary units]] (miles, inches, pounds, etc.) have had legal status in the US. US Customary units are in fact defined by reference to metric units; that is, legally, an inch is ''defined'' to be exactly 25.4 millimeters.

Some space missions have failed because of unit incompatibility in guidance software between US and SI measurements.

Some space missions have failed because of unit incompatibility in guidance software between US and SI measurements.

== References ==

== References ==

== See also ==

== See also ==

[[Category:Units of Measurement]]

[[Category:Units of Measurement]]