[Razengan]

> the pain feels like it is coming from a non-existent limb does not mean that that is where it is actually coming from.

So uhh, what exactly is pain? Is it the feeling? Is it the physical damage? Is it a warning about damage? Is it the fear of damage (as in broken hearts etc.)?

[orange8]

I'm not a biologist or anything, but I'd define it simply as a signal from your nervous system to your brain.

[Razengan]

So.. a thought? An emotion? Or a sensation?