Designs,
Yes, I have the Reasoning book.
Looking at that book, the WT's position on "soul" seems contradictory and confusing.
On page 375 it says that "soul" means "a person or an animal or the life that a person or an animal enjoys."
On that page, they equate "soul" with "a living person."
On page 382, it says that the soul is the person.
The soul (person) that sins will die.
By those definitions, it's not possible to kill a human being (person) without killing his soul because the soul is the person himself.
But on pages 173-174 it says that in Matthew 10:28 when Jesus says "soul" he is referring not to the person's life, but to his life's prospects in the resurrection.
But the WT teaches that animals as well as people are souls (page 376), and animals have no life prospects in a resurrection.
This definition of "soul" doesn't make sense at all in Genesis 2:7: "... and the man became a living soul."
And, of course, they teach that the soul isn't the same as the spirit because they believe the spirit is the person's impersonal life force.
Although no one really ever challenged me on all this, it just doesn't make sense to me now.
It seems totally inconsistent.