knowing how is a person only by the date of birth! Can you imagine??

It could seem kind of strange, kind of crazy, kind of weird, but some people has this ability. It is real that sometimes you relate a person to a sign and take out some conclusions but, can be these conclussions extrapolated to other people?? Do we have carachteristics in common with the people with our same sign?? Why not?
In any case, it is an interesting thought.