It has been given as proof that time speeds up at higher altitudes because of the decrease in gravitation demonstrated using atomic clocks. If this is true how tall would a vine have to grow to have the tip be older than the stump? I suggest the whole concept must be wrong that suggests an impossibility such as this. Perhaps something is being overlooked in the functioning of the clocks operating under differing environments (gravitational field strength). I've read such authors as Hawking suggesting distortion of time but I am silly enough to believe that now is now everywhere.