The sense in which the word variety is employed      The following statement is not offered any explanation in the article The word variety is employed in the sense which is similar to that of manifold This appears to be grammatically incorrect but I dont know how to fix it because I dont even know what its trying to say Is it merely saying that a variety is a similar object to a manifold in some sense If so this is a terrible way to express it I am sure that any native speaker of English who doesnt already understand what this statement is trying to say will be confused by it Would anyone care to explain