# Does 2011 Start a New Decade?

Quoting Quentin

"This means- Pat- that on the 10th birthday that child has already lived one full decade. That means also -Pat- that on that very 10th birthday the child enters it's second decade".

And that very day after his 10th birthday would be the equivalent of year 11, or 1921 or 2011.

The first mistake made by those who argue that the decade begins at one and not zero is the erroneous assumption that there ever was a year one AD. There wasn't- it is simply a mathematical extrapolation (and one that contains many errors)

The Anno Domini numbering system was invented by the Roman monk Dionysius Exiguus in (what would become) the year 525 AD. At that time the Roman calendar changed with each emperor (for instance "the 3rd year of Romulus", or "the 9th year of Cicero" etc. etc.) A consecutive calendar dating back to time immemorial would have been considered ludicrous and meaningless. The AD numbering system did not come into common use until the reign of Charlemagne. (742-814)

The second mistake is assuming that Christ was born in the year "1 AD" Scholars disagree on whether Dionysius intended the birth of Christ to be 1AD or 1BC. If he meant 1BC then of course 1BC becomes in essence year zero. There is a very good reason to believe that Christ was born in 1BC and that is King Herod is dead by 1AD. (using the Dionysian calculation)

We cannot use the year 1AD as a starting point because not only is it theoretical and erroneous, but our calendar has been adjusted many times since then. And we here United States have only had stable decades since 1752 when the last adjustment was made to the calendar we use.

You're right in that 9 x 365 is 3285. What you are neglecting or forgetting are the 365 days that occur before the year 1. By the time a child reaches age 1 he/she is 365 days old. A baby does not start at year one- it takes 365 days to reach year one. The child actually begins life one year before year 1. So the day before the 10th birthday that child is 3650 days old (more or less because in any give 10 years there are least 2 leap years) This means- Pat- that on the 10th birthday that child has already lived one full decade. That means also -Pat- that on that very 10th birthday the child enters it's second decade.

(birth to age 1) 365 days,

(1-2) 365 days,

(2-3) 365 days,

(3-4) 356 days,

(4-5) 356 days,

(5-6) 365 days,

(6-7) 365 days,

(7-8) 365 days,

(8-9) 365 days

(and finally the year 9- 365 days)

add that up Pat (or let me help- it's 3650 days)

On the day of the child's 10th birthday (10th Pat- 10th) the child has surpassed a decade and is in decade 2.

Red faced Pat?

Can another educated person step up to the plate?

365 X 9 = 3285

365 X 10 = 3650

1,2,3,4,5,6,7,8,9,10

365 days= 1 year old

730 days = 2 years old

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3650 days = 10 years old

the first year is year 1, NOT YEAR ZERO. When the year is over we say that we are ONE YEAR OLD. When the tenth year is OVER, we say that we are ten years old. That ten years constituted one decade. The day following that year begins the next decade. That year will end in a 1.

Better yet,ask any first grader to count. They will never say, "0,1,2,3,4,5,6,7,8,9", yet you are suggesting that this is how we count decades. Not once in recorded history has anyone ever referred to the first year "Zero". The first year in the Gregorian is called year 1 A.D. Therefore, the tenth year is called year 10 A.D. Since ten years make a decade, the first year in the new decade is year 11.

1,2,3,4,5,6,7,8,9,10

11,12,13,14,15,16,17,18,19,20

21,22,23,24,25,26,27,28,29,30

Quinton - Do you see the pattern here?

We just celebrated the ending of year 2010. Look above. Every ten years ends in a Zero. We are in the early stages of year 2011. This is the first year of the new decade.

Heck, maybe in Massachusetts , you guys do start counting with zero........no oone else does.

If you agree the day old child is in his/her first decade and you agree that a decade is 10 years- then you should not be as suprised as you are that on the last day of the 9th year said child will be some 3648 days (plus at least one leap day) old which, as your caluculator will tell you, is quite approximately 10 years. Therefore, decade 2 starts on the first day of the 10th year. (or second if you prefer to quibble over a day or two)

Maybe if I type a little slower you can understand counting 101.

A baby who has not reached his first birthday is in his first year and his first decade. 12 months (or one year if you prefer) later we celebrate his (all together now!!!) "first birthday" (that means he has been alive for one year. he is now, one year old). 120 months later we celebrate his 10th birthday which is the end of his tenth year of being alive or the end of his first decade of being alive. In short, the kid is now ten years old. He started life in year 1. He started his decade in year 1. He will start his next decade at the beginning of his 11th year just like we started our decade in our 2011th year.

As for your next posting, England would have adopted the Gregorian calendar much sooner had they not broken off from the Catholic Church. The Gregorian calendar counts years based on the traditional incarnation of Jesus.

It wasn't until 1752 that January 1st became the start of the new year in England and the colonies (including us) Previously the new year began on March 25th. That of course means that the year 1751 was only 9 months and 6 days long. What do we do about that decade?

And in what decade is the child who has not yet reached his/her first birthday? Answer- First! hmmmm I guess we either start at zero or day one (not year one)

"No wonder the US has taken an utter bath in the world's rankings for children's intelligence. No wonder our schools are this terrible...."

There ARE uneducated idiots running around. Why? Because most people insist sending their children to government schools. The students coming out of private school are very well educated, and they are not subject to the liberal, government indoctrination that is thrust on the public school students. In addition to graduating with a sub-par education, these students are also deficient in the skill of critical thinking which is why they believe the new decade began last year! :-)