> Derick claimed that it was an intended behavior, I'd like to
> make sure before documenting it. I'd also like to know why
> do we have this feature ? It's quiet confusing.
>
You would doubt Derick? Shame!
Yes, this is intended behavior, primarily to allow children to call parents
staticly and still have $this available for parents to modify properties.
The fact that it works across non-relatives is simply a side-effect.
-Sara