So, no, a language like Lojban will probably not, in and of itself, lead to an ultra-logical, Vulcan-like race that is over-precise and excruciatingly pedantic although it would probably be just the sort of language they would choose to use , but it might lead to a race that shakes its collective heads at other races and their frequent miscommunications. The concept of a logical language such as Lobjan or Speedtalk is quite intriguing, but it might be good to let people know that a bit of a handwave is required to make it work as an actual spoken language for a culture.