Grey Magick Options

Greetings all of SM ~
I've come to ask a question on "Grey Magick", regarding the various outcomes that would lead to it either being white or black. As I've heard many examples as to how different spells can in turn become w/b, I've yet wondered in great detail if other variables of performing any spell can in turn overcome the initial goal and turn that spell into the opposite sort of magick.
I'm not entirely sure if this statement clarified my question well enough so I'll provide an example. Let's say perhaps you perform a spell to help a stranger come out of a coma, a coma that this stranger would never wake from, with no other background information on this stranger whatsoever, you decide being in a coma is just a terrible thing to endure in the long run. You run the divination process to put your mind at ease of what you want to accomplish and it turns out you have the green light. In this case, divination has told you no real negative influence has befallen your wish to return the stranger to his health. You go through with the spell, the man awakes and all is well. Two years later you understand this very stranger woke up one morning and decided to grab his own personal automatic rifle and go down to a super market and wreak havoc on 12 other lives before turning the gun on himself.
Now, I'm currently not a practicing magician. Perhaps, divination would enlighten you to events like this, though theres also so much the divination process can tell you about what you currently want done. Is an example like this accurate? Can it be? If so, to what incentive do the rest of us have to continue with magick if it will have unknowingly dramatic feedback.
I base my life on, everything having a purpose, every action causing a reaction that can potentially be bad or good. Even though I do a lot of good in my life through natural means, Im not going to truly know if that bit a good I just did, will take a turn for the worse. Is this how we're supposed to view magick?
Please, put my mind at ease. Thank you all in advance. (IMG:style_emoticons/default/egypt1.gif)

Greetings Priest!
Welcome to the Forum! You have touched upon a basic concern for many people who study/practice various magics.
You will drive yourself insane if you get too wrapped up in wether or not your actions now will have deleterious effect down-the-line.
Personally, I don't ascribe to the black/white/gray shading of magic. The whole subject is so subjective that you will find that you must keep counsel with yourself about the karmic repurcussions of your actions. Stepping on a butterfly may cause a drought elsewhere scenario. You should always act responsibly when it comes to power. Try to ask for permission before trying to heal someone. The more intune we become to our selves and to our universe the easier it becomes to deal with these decisions. Morality and responsibility are very personal spaces. A love spell could be considered bad magic if it subverts the recipients will from its owners path. It can also be a blessing. Your ability to alter your reality is not in question until it overlaps and changes my own. *sigh* I'm not sure if I articulated that very well...but I hope that you can see my point. Also, your spirituality is uniquely your own, impressing it upon others unasked for is not very friendly, no matter what it is you're doing. Many religions get around this by blaming it on the ineffableness of their god(s). To easy and a very slippery slope, indeed! I wish you the best on your path! I'm sorry if I muddled the issue! (IMG:style_emoticons/default/smile.gif)