> Who made that decision? When and why? As to "why", because the new definition is simpler, more consistent and easier to explain. By the way, your quotation f

> Who made that decision? When and why? As to "why", because the new definition is simpler, more consistent and easier to explain. By the way, your quotation from the gram definition page contains a glaring flaw -- the definition is 1 x 10^-3 kg, not 1 x 10^3 kg. Reasonable people may differ, but to me, saying, "a gram is one thousandth of a kilogram" is self-evident and simplicity itself.