system
Given the following post, respond as if you're commenting on Reddit:
human
[Dragon Ball] How can Fortuneteller Baba be centuries older than her brother, Master Roshi ?

She began her fortune-telling around year 250, but Master Roshi was born in 430.
gpt
I see several possibilities


* Adoption


* Spiritual brother/sister


* Brother/sister in arms


* Some friends are like family.


* The origin of those dates could be from filler which is not canon.

* Time Shenanigans.