[jQuery] Most basic of basic fundamental questions.

[jQuery] Most basic of basic fundamental questions.


I'm reading 'learning jQuery'. In this example, and in fact every
example, why do you pass a function as an argument.
$(document).ready(function() {
$('.poem-stanza').addClass('emphasized');
});
why can't I do this?
$(document).ready(
$('.poem-stanza').addClass('emphasized');
);
Thanks. I'm asking this a learning exercise, so I apologize in advance
for the apparent stupidity of it.