[quote]
Ah, telepathy. It's the closest thing to magic seen in most Sci-fi. It's an amazing idea, but unfortunately, it has some limitations.

Most sci-fi with telepathy excuse it by claiming that the species evolved to possess this ability naturally, and thus is capable of reading the thoughts, or at least feeling the emotions, of every living thing they encounter (see: Deanna Troi). I call bullshit. Yes, I believe it would be possible for telepaths to exist, but I cannot think of any logical reason why they could sense the thoughts of other species. I imagine that any telepathic species would communicate by sending mental signals out using an organ presumably located in their brain, which another member of that same species would "hear" using a similar organ. 

Now tell me, what if Species A is able to telepathically communicate through these organs, but Species B does not have them, and therefore does not send out mental signals? How would Species A pick up on the thoughts of B?

Hint: they wouldn't.

Use telepaths all you want. Telepathy is cool. But don't attempt to say that your species can read the thoughts of every other species. It makes no sense.

The only possible exception is if the telepathy worked through some sort of technology, but we'll cross that bridge if we get to it [/quote]

This is what the OP says.