(As a sidenote, this is also the problem with many eHow.com articles---you polish you shoes by buying polish and using a cloth to apply it; you rent an apartment by visiting several apartments in your price range and picking your favorite, etc.)
In general, I don't want to read things where I can guess what the author will say in advance---I want to be surprised, at least a little bit. Now I talk a lot on this blog about how essays are about a mind in action, and the easiest way to see that mind work is by watching the author's opinion change or her ideas develop over the course of a piece of writing. In Malcolm Gladwell's book review of "Overhaul," a book by the guy who was appointed to oversee the federal bailout of General Motors, Gladwell has a thesis right from the beginning, which we get in classic five-paragraph-essay style at the end of the first paragraph:
The result is fascinating—although perhaps not entirely in the ways that its author intended.
But what Gladwell goes on to say about author Steven Rattner and the book and about General Motors is quite surprising, which is to say interesting. In true essayistic fashion, there is more than meets the eye; not only is this is a book review that is secretly an essay, it is an essay ostensibly about Overhaul and General Mills that is really about the private-equity model, which buys falling apart companies, patches them up, and sells them off for a profit. And maybe it wasn't even about that, but about the self-absorption and confidence that a person has to have to take on a job that has hundreds of millions of dollars at stake---a storyline that isn't surprising in itself, but is surprising because of where we found it.