>>Each day the English drive miles defined in metres and drink pints of beer
>>defined in millilitres, while in the USA, people watch football where the
>>main scoring is done over an exact distance of exactly 9.144 metres.
>>It¹s called Ohidden metric¹.
>>
> I'm not convinced that a=b makes 'b' a hidden version of 'a'.  I see where
> you're coming from but you can apply the argument both ways.
>
Definition of metre:
 
The length of the path travelled by light in a vacuum during a time interval 1/ 299 792 458 of a second.
 
Definition of yard:
 
1 yd = 0.9144 m
 
Dependencies:
 
metre --> real world
 
yard --> metre
 
Phil Hall
 
 
 

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