1. Transylvania is inhabited by humans, vampires,and werewolves. You cannot tell simply by looking at someone what he or she is.However, humans always tell the truth, vampires always lie, and werewolvessometimes tell the truth and sometimes lie.
In addition, some inhabitants are quite insane and think all true statementsare false and all false statements are true. The other inhabitants are sane andcorrectly distinguish between true and false statements.
So, in Transylvania a false statement could be made out of malice or simply outof honest delusion. For example, a sane human knows the earth is(approximately) round and says so, while an insane vampire believes the earthis not round so will lie and say that the earth is round.
Suppose a Transylvanian named Lucy claims to behuman. What do you know about Lucy?
In addition, some inhabitants are quite insane and think all true statementsare false and all false statements are true. The other inhabitants are sane andcorrectly distinguish between true and false statements.
So, in Transylvania a false statement could be made out of malice or simply outof honest delusion. For example, a sane human knows the earth is(approximately) round and says so, while an insane vampire believes the earthis not round so will lie and say that the earth is round.
Suppose a Transylvanian named Lucy claims to behuman. What do you know about Lucy?
Answer
| | She is human. | |
| | She is a vampire. | |
| | She is sane. | |
| | She is insane. |