[sonnyblarney]

Good point - definitely the 'lack of self awareness' is a big differentiator - that said, sensory and cognitive ability is seriously impaired to begin with in these scenarios of sleep deprivation/stress induction.

It's also very scary once you do realize that you've been having a conversation with 'nobody' (or a 'ghost' is what one might think) for quite some time - it adds quite a degree of neuroticism.

On a funny/scary note - the weirdest of all is seeing two people apparently 'having a conversation' ... but upon closer inspection you find they are just taking turns talking near gibberish at one another. All of the manner, body language and tone of a 'conversation' but really, it's just two temporarily crazy people mumbling ... with automatic weapons. Thankfully with no live rounds in most situations :)