Stupid? 

As soon as I saw the phrase "metal is stupid" at the very beginning of the article, I assumed I misread it. When I confirmed that it did indeed say "metal is stupid," I then assumed it was vandalism. However, I don't know anything about chemistry (See: Soviet education system) so if the word "stupid" has some other meaning in chemistry, I would have no way of knowing or refuting it. Could someone that actually has some amount of knowledge on this subject confirm whether this is or is not vandalism or a typo or what-have-you?