Fear & Reason

From the introduction: When you do something risky, roll 1d6 to find out how it goes. Roll +1d if you’re prepared and +1d if you’re an expert. (The GM tells you how many dice to roll, based on your character and the situation.) Roll your dice and compare each die result to your number. If you’re using REASON (science, reason), you want to roll under your number. If you’re using FEAR (rapport, passion) you want to roll over your number.