Board Thread:Off Topic/@comment-25396609-20190908002326/@comment-29684190-20191207002700

Phantomlink959 wrote: As far as acceptability there's no reason you can't.

The real question is, what benefit does it offer? How would it aid the user in combat? Hey phantom, the guide book flat out states that lie detection is a semblance. Empathy can be at least indirectly helpful in battle, lie detection though...

There's other semblances can't be directly used in battle, like Foxes' semblance. And some that can't be used on Grimm.