Lol, use sparingly... Took a minute to discern your intent, despite the hint.
Perhaps a pattern for absolute singletons but then, why not the class itself being that behaviour in the first place?

Regards, Gary

Sent from my iPad

On 19 Apr 2012, at 02:55, Eliot Miranda <eliot.miranda at gmail.com> wrote:

> SystemNavigation class methods for error handling
> doesNotUnderstand: aMessage
> 	(self includesSelector: aMessage selector) ifTrue:
> 		[^self default perform: aMessage selector withArguments: aMessage arguments].
> 	^super doesNotUnderstand: aMessage
> 
> fed up of typing new ;)
> -- 
> best,
> Eliot
> 
> <SystemNavigation class-doesNotUnderstand.st>
>