| SvennoJ said: In that case you should be consistent and call this century the 20th century as all the numbers start with 20. |
What?
Not at all, you cannot call this century 20th. Since 2000 years have ALREADY passed that means 20 centuries have ALREADY passed. Now we are in years that come AFTER 2000 years past so since 20 centuries have passed, this one is the 21st. We are 20 centuries old in our history YES, but we are in our 21st century, this 21st century is NOT COMPLETE since we are still inside it ok? So we cannot say our history since the beginning of this count is 21 centuries old, we can say it's 20 centuries old and we are currently in the 21st.
Year 1 of your life is from birth until you TURN 1, that's your FIRST year, but you are NOT 1 year old UNTIL you actually live one full year. ONCE you have lived 1 year and mom and dad sing you the happy birthday to you song, you are 1 year old living in your SECOND year of life but you don't say you are 2 years old just because you are living in your second year of life, you STILL say you are 1 year old UNTIL you FULLY complete your second year of life, then you will say you are 2 years old and you will be living your 3rd year of life etc...
How is that not clear?
There is no calling the first letter of the alphabet zero because a letter cannot be divided. You don't have half a letter or part of a letter. You have a full letter. And if you want to quantify a letter then you can say the alphabet starts at zero when there is no letter and is at 1 when you have set the first letter.
Who was your math teacher at school (you and the others who still don't get it) cause he/she deserves to go to prison or something 
