>working from what we already knew and making logical inferences. The hardest & most valid exam I ever wrote used the same technique. Every single question on

>working from what we already knew and making logical inferences. The hardest & most valid exam I ever wrote used the same technique. Every single question on the exam was novel. I flipped through each page looking for something familiar, got to the end. The class required about 30 hours of homework per week, but we were told we could do it while walking, showering, etc.