b-noun&rsquo; parser
(like the one we have been using ever since chapter 2)
could be sufficient for a carefully designed adventure game.
However,
<a href="http://en.wikipedia.org/wiki/Infocom">Infocom</a>
has proven that a more advanced parser
really helps to make an enjoyable game.
It does not have to pass the
<a href="http://en.wikipedia.org/wiki/Turing_test">Turing test</a>;
remember, it&rsquo;s only a game.
But the parser should enable the player
to express his intentions in a more or less natural way.
