hippoface wrote:MellieCakes wrote:dlgn wrote:Skylord_Fox wrote:How old is Ponyville then? Based on her age, it really can't be that old, unless ponies age differently
OR... Is it the magic property of zapapple jam??
Winter Wrap-up states that the citizens of Ponyville have been doing it the same for hundreds of years.
Aren't horses only supposed to live for like, 25-30 years? But then again, we think that Twilight and AJ are in there early 20s..So Granny Smith could be a couple hundred years old. 
My guess is 250. I have no idea why she would live that long though :o
"Ponyville was started by Earth Ponies, so for hundreds of years they've never used magic to clean up winter."- Twilight Sparkle - Winter Wrap Up
Most probable answer is a writers' goof, someone forgot to put someone in charge of internal continuity.
Ignoring the most simple solution what other solutions are?
What if Granny Smith is of a similar age to a regular old person e.g. between 80 years to slightly over 100 years then either Granny Smith is mistaken or Twilight Sparkle is.
1) Granny Smith is "just a cooky old lady"-Diamond Tiara
Ponyville is hundreds of years old.
Granny Smith may have got some details wrong about the Smith's involvement.
I.E. Ponyville had some settlements buildings and farms with Earth Ponies, but the Smith's arrrival and discovery of the Zzap Apples made Ponyville from just a hamlet into the bustling town it is today? Maybe?
2) Twillight Sparkle is mistaken
Granny Smith is correct in all of her recollections. Ponyville was founded within her lifetime.
Earth Ponies don't use magic in the way that Unicorns do and that is an Earth Pony tradition that does date back hundreds of years. However since Ponyville is a relatively recent settlement which was founded by Earth Ponies, their customs have been carried over.
Canterlot is different because its predominantly a Unicorn settlement and a center of government, culture and learning.
3) Granny Smith is reeaallly old
Both Twilight's and Granny's statements/stories are correct. Ponyville has traditions that date back to it's founding which is roughly over 200 years. Granny Smith must be that old.
