True or false?
1. some causes are tendencies.
2. if some course of action is not obligatory then it is forbidden.
3. the base-rate fallacy tends to occur when it is taken for granted that the prior probabilities of the outcomes are equally probable.
4. base conditionals are logically equivalent to their contrapositive.
5. in case-based reasoning, if two cases are comparable then the ruling in the first case is a precedent for the second case.