In article <✉4ax.com>, ✉eircom.net says...

> > Still, as you know, volatile or complex
> > preconditions cannot be checked beforehand.
> 
> It depends on the quality of the input data.

There is no way we can predict beforehand that a network 
connection or a target machine will break on next use.
Whatever the quality of the input data....


--- Raoul