That's the worst part about cancer - the uncertainty - but if we look at the big picture, it's really no different from anything else in life. Most of the time we live in an oblivious facade and truly never realize how truly fragile life is until we're closely touched by death. There are people out there who are unable to eat for many reasons, (we have a child at one of our schools who Is severely deformed, there is something the matter with her jaw, she has a permanent trache and is fed by a peg and has never had cancer. ) life is like that - random - walking happily down the street one day, mowed down by a truck the next. Enjoy everything, even the dark moments, because the alternative is worse. hugs.