I watched (on Television) a brain surgury take place in Japan. The patient was awake and communicating the entire time; they used no anastetic other then acupuncture to redirect the electrical energy so that she wouldn't feel pain.
Now, if we want to distinguish these effects from a placebo, I guess we could cut into someones head without anastetic and w/o acupuncture, but we could only TELL them that it won't hurt. Would you like to volunteer your skull for the experiment...cause I ain't voluntering mine!
Acupuncture has been proven to "work" by the use of placebo in different Western Universities, such as UCLA. Acupuncture is based off "Chi". Now although we can't accurately measure "chi", the fact that acupuncture can work based off the principle of manipulating this "unseen energy" proves that it at least "exists."
Dispite what a lot of people seem to be saying here, Chi is not just an "idea". Its a physical energy, that can be proven or disproven, and measured (even if we don't know how to yet measure it). Now I know this takes a lot of the mysticism out of the equation for some of you, so I apoligize for ruining the fantasy.
So, if you (any of you, not directed at one person) want Chi to be an infinite unprovable energy, fine with me. I'm sure you can see dead people, communicate telapathically, and fly around out of body at night too. I, however, prefer hard science to explain things (when possible and available). Hard science says that it exists. If you don't like it, take it up with the medical community.
(I am now waiting for someone to tell me that gravity and water are only observable ideas also... )