That's the whole premise of Prolog (ok, if you squint at it from the right angle...

		ctdonath on March 16, 2011 \| parent \| context \| favorite \| on: The worst program I ever worked on That's the whole premise of Prolog (ok, if you squint at it from the right angle). Execute steps X Y and Z, but if Z fails go back and try Y again a different way, and if that fails back up further and try X again a different way...