> Then prove it: How exactly do you think you can meaningfully add two PlainMonthDays? What does such a thing mean?

Star Wars day is May the 4th. Today is May the 1st. Star Wars day is in 3 days.

I'll stop here.

You might want to look in a dictionary and see what `add` means.

4May+1May is still not meaningful to me, and frankly I do not believe that it is meaningful to you. I do not think you have thought about what I am saying at all, and think it's shocking that you have an opinion about something you clearly don't understand.

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pavo-etc 2 days ago | parent [-]

You might want to look in a dictionary and see what `subtract` means.

4May-1May is meaningful to me, and frankly I do believe that it is meaningful to you. I do not think you have thought about what we are saying at all, and think it's shocking that you have an opinion about something you clearly don't understand.

	▲	geocar 2 days ago \| parent [-]
		> 4May-1May is meaningful to me Great, but it isn't addition. > and frankly I do believe that it is meaningful to you. Well you're wrong. Consider 1Mar-28Feb: Should this be 1 or 2? This proves it can't be subtraction (in the arithmetic sense) either. > You might want to look in a dictionary and see what `subtract` means. Subtraction is only addition if 4May-1May is equivalent to 4May+-1May which leaves you with an additional problem: What to do about negative plaindates. > I do not think you have thought about what we are saying at all I've probably thought about it too much at this point. You don't even know how arithmetic works, so I think if you have anything to say it will be too difficult for me to understand.