I completely agree, It's time to start counting atoms/molecules of something (being careful with isotopes). Integer numbers are very good for "perfect" (well, v

I completely agree, It's time to start counting atoms/molecules of something (being careful with isotopes). Integer numbers are very good for "perfect" (well, very good) abstract definitions. And it would also really prolong the French Revolution spirit in the sense that this unit would become so universal that you don't need a physical reference anymore, like what we could achieve with the other base units (like second then meter).