Every now and then, The New York Times takes a big ol' swipe at derivatives for being evil and whatnot. That's fine and well -- and sometimes obligatory, particularly when it comes to certain structured products for which it's hard to discern the benefit to anyone outside of a bank.

But it can all go awry when someone starts arguing against derivatives and just gets it wrong. It makes us do a sad, frowny face and then get incredibly frustrated.

Read the whole story at ft.com/alphaville