>>>>>>Or the fact that a UK pint is 20 ounces but a US pint is 16 ounces :)
>>>>>
>>>>>If only there were some standardized system of measurement that could be used worldwide so everyone would use the same units and values. ;)
>>>>
>>>>What can be more standard than a stone? A stone is a stone everywhere. You pick one off the ground and you know, with complete conviction, that you hold exactly one stone in your hand.
>>>
>>>But what if you're stoned?
>>
>>Who is going to throw the first stone?
>
>Whoever lives in the glass house.

Does it matter if it is polymethyl methacrylate (aka Plexiglas, Acrylite, Lucite, Perspex, etc. ) rather than a non-crystalline amorphous solid of silica ?

IIRC there was a story that explained why people living in grass houses shouldn't stow thrones.