Problem with attacking stupidity is its not necessarily fixable. We do not attack people over things they cannot change, like the color of their skin or their sexual orientation.
How do they change their innate intelligence? We’re not all gifted with the same amount. Can your system apply to someone who takes 5 minutes to learn the definition of even one new word? Someone who needed remedial classes, because the average classes were beyond their ability?
We need a system that allows for them too. So, asking for intelligence is asking too much, so that the execution of the method is easily within everyone’s capabilities. Thus, back to the drawing board.