Can anyone explain this

roelof <[email protected]>
Newsgroups gmane.comp.ai.prolog.swi
Message-ID <1394210210216-14432.post__34020.6180736006$1394210329$gmane$org@n3.nabble.com> 
Hello, 

Im following the Adventure in Prolog tutorial from Amzi.

then I see this : location(X, kitchen), write(X) ,nl, fail.

Why not just using : location(X, kitchen) 
I can understand why write(X) is mentioned. that's  to write the item on
screen.
But why stop with fail ?

Roelof




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