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also, if you have the time, in advance of economics, go ahead and read chapters 1-4 for brush up. The assignment will be read chapter 5, but I am finding 1-4 helps.

similarly, for risk, your biggest challenge will be to pick an appropriate problem to look at it. Rather than brainstorming at first, read all the material and then brainstorm. You will find your choice will be much more appropriate after grasping the material.