Meter is not defined in relation to Earth's circumference since 1799.
The circumference of the Earth is 40,075 km, as opposed to 40,000 km as it was originally defined.
Similar to Gradians, 400. Equator to the pole is 10,000 km x 4.
Ooh, the original definition is only 99.8 % accurate.
The base is still the same.
Fahrenheit defined 100° F as body temperature.
No it's not, it's 98.6° F.
The base still stands.
The base of Metric is water and the circumference of the Earth.