And once again the world has changed...it's funny, in the classes I take now, i hear the theories I was taught in high school back in the 80's debunked...everything I thought I learned was flawed in one way or another...now much of what I have been learning recently is going to be trashed and rethought....the only thing you can know for certain is that you really don't know...I love the story from Dan Millman's Peaceful Warrior book where the young guy goes to his guru and says,'okay, I guess I know what I'm suppossed to now'.