Re: Mental Powers
here's my ideas on the issue.
I'm sure you could mind scan for zombies (if you allow undead as a class of mind), but you wouldn't hit anything because they don't have minds. However, you would pick up a Vampire, or Lich etc. because they are sentient undead. A cart has no mind, therefore can not be effected by mental powers (except TK).
Next up, the ability to effect all classes of minds should be more than +10.
Third, I usually abolish the use of "alien" as a class of mind if it's a sci fi game where the PCs can be aliens (and not just like war of the worlds or something), and change it to "sentient minds".
Next up. The "Human Class of mind" what does it take to not be a "human" mind?
well according to p117 of the Hero book, your character (or at least his free will).
See, this is because stuff like andriods, or aliens or vampires, "[that are] smart enough and self-willed enough to function like a human being, he should probably be effected by both the human and [other class of mind] (for which he may be allowed to take a physical limitation)
that's my stance