You are opening a massive can of philosophical worms with this.

( Monty Boyce, My cheese game is strong, Mon 25 Oct 2010, 16:26, 2 replies, latest was 15 years ago)

Yes if you totally ignore any psychological reasearch since about 1970.
I'm not going to though so, boom headshot.
(PsychoChomp, Mon 25 Oct 2010, 16:29, Reply)

I know nothing of any philosphical theory newer then about 1850
and practically nothing about any older than that that's not Socratic, to be honest.
( Monty Boyce, My cheese game is strong, Mon 25 Oct 2010, 16:33, Reply)

*sighs*
I firmly believe that we are creating reality, on the fly, in our own individual minds. The mind is the most complicated machine that we know of in the entire universe and is capable of some pretty amazing feats. Therefore,'seeing' a ghost is a pretty easy thing for it to achieve.
(Cancer Joy was short lived, Mon 25 Oct 2010, 16:52, Reply)

We are not creating reality,
We are percieving reality from the sensations we recieve. the mind is incredibly complicated but it also takes a shit load of short cuts and is easily fooled.
I don't really get your argument, are you saying that ghosts "exist" only in the mind? In which case I would say they're no more real than any of the optical illusions you can see, like the face on mars.
(PsychoChomp, Mon 25 Oct 2010, 16:57, Reply)

I am saying that
the mind decodes 'a reality' from the fog of information we are constantly surrounded by. Some of this 'fog' is widely accepted as real...eg, chips and boobehs. Some of it is classed as paranormal, our mind still perceives this although in this day and age we try to dismiss it as hogwash etc etc. We all have a 'sixth sense', our instincts if you will, this is merely our mind detecting this so called paranormal information. Ghosts and visions are merely a more condensed form of these energies.
(Cancer Joy was short lived, Mon 25 Oct 2010, 17:09, Reply)