....ahhhh, but even though the rows in an airplane are numbered 1-12 then the next row is 14, doesn't mean you aren't actually in the 13th row, because you are!
Perhaps you don't understand things very well. If you look back into history, using the Gregorian calendar, you will reach 1 A.D., and then what happens after that? When you keep going THERE IS NO YEAR 0. You count down past the year 1 A.D and get to the year 1 B.C., and start counting upwards.
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