> Would there be 10 base-10, or 10 base-12 commandments in the Hebrew Bible?
This is a case where there's no difference. Right now, Wikipedia's page on the Ten Commandments notes 15 different commandments. (Actually, 16, but two of those are "thou shalt not covet thy neighbor's house" and "thou shalt not desire thy neighbor's house", and Wikipedia knows of no tradition that thinks of those two as separate commandments.) Here it is obvious that the number of commandments is significant, at 10, and the content of the commandments is significant, but unrelated to the number. If you want 12 commandments instead, it's sufficient to renumber the existing 15 commandments, and this is clearly how the problem has been approached historically.
The same thing applies to the Bill of Rights; there are a lot more than 10 enumerated rights, but they're bundled into 10 amendments.
> Would we talk about a US president's first 100 base-10, or 100 base-12 days? Would the extra 44 days matter?
This might make a difference; 144 days is close enough to half a year that you might just mark the half year and not bother with the 144 days. Or you might mark the quarter-year, which is almost 100 days.
This is a case where there's no difference. Right now, Wikipedia's page on the Ten Commandments notes 15 different commandments. (Actually, 16, but two of those are "thou shalt not covet thy neighbor's house" and "thou shalt not desire thy neighbor's house", and Wikipedia knows of no tradition that thinks of those two as separate commandments.) Here it is obvious that the number of commandments is significant, at 10, and the content of the commandments is significant, but unrelated to the number. If you want 12 commandments instead, it's sufficient to renumber the existing 15 commandments, and this is clearly how the problem has been approached historically.
The same thing applies to the Bill of Rights; there are a lot more than 10 enumerated rights, but they're bundled into 10 amendments.
> Would we talk about a US president's first 100 base-10, or 100 base-12 days? Would the extra 44 days matter?
This might make a difference; 144 days is close enough to half a year that you might just mark the half year and not bother with the 144 days. Or you might mark the quarter-year, which is almost 100 days.