There are so many unfounded assumptions in that article that it would take a post of a similar length to rebut them all -- "narrow" as an essential part of the definition of chasm? And even so, who says the bridge spans the chasm's width, and not its length? "Minimally, for something to be called narrow its length must be at least twice its width." Huh? According to who? His deductions about the door of the Chamber of Mazarbul are pure invention. One can wedge a door that's thirty feet wide and thirty feet tall as easily as one that's five by five. Tolkien's talking about
wedging, not
barring, as occurs in the movie.
Fortunately,
SPM has already rebutted the only faulty assumptions that really need to be addressed.