In the first Knights of the Old Republic (KotOR) there are three ways to improve your dialogue options, i.e. get people to do what you want them to do without using the good ol' glowstick:

* The [**Persuade** skill](http://strategywiki.org/wiki/Star_Wars:_Knights_of_the_Old_Republic/Skills#Persuade) can be leveled up to improve your chances of passing the common *[Persuade]* dialogue options.
* The [**Affect Mind** force power](http://strategywiki.org/wiki/Star_Wars:_Knights_of_the_Old_Republic/Force_powers#Affect_Mind) can be chosen to unlock additional dialogue options through Jedi persuasion techniques. Comes up in the dialogue as *[Affect Mind]*:

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> Affect and Dominate Mind enable persuasive use of the Force. Once a Jedi has this power, extra options will appear in conversations as appropriate. Success is not guaranteed for extreme commands or if the target is strong willed. 
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* Then there is the **Dominate Mind** force power, which is the upgrade of *Affect Mind*:

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> Dominate Mind is more powerful than Affect Mind, and very few beings can resist its effects. This power does not affect droids. Only the main player character can select this power during level-up.
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As you can see, the description for *Dominate Mind* is very vague. My understanding was that it simply improved the existing *[Affect Mind]* dialogue options in a way to work in some cases where *Affect Mind* would fail. But this is only speculation. So my question:

* **What *exactly* does Dominate Mind do that Affect Mind won't?** Are there any concrete examples where Affect Mind fails and Dominate Mind succeeds?
* **Does Dominate Mind unlock additional dialogue options anywhere in the game?** If so, where?

Basically I am trying to determine if there is any reason to get this force power, or what it actually does. Most discussions I came across were based on hearsay and speculation, so it would be nice to get some facts on this.