Why are the ages of younger children represented in months?

[jman19]

The rate of development of children of that age is better expressed in smaller units of time. This is amazingly obvious, ergo, this thread sucks :thumbsup:

 

[b0mbrman]

Originally posted by: Zysoclaplem
Isn't a 18 month old child a 1 year old?
Why is a 5 year and 3 month old not considered a 63 month old?
I can see up to 1 year of age, but not after.
Growth remains steady from birth until double digits right?
So it shouldnt have much to do with the childs size.
Blah

Because a 13-month-old child looks very different from a 23-month-old child...Whereas a man who is 30 years and 1 month old does not look very different from a man who is 30 years and 11 months old.