There are two attitudes towards dice which I, like, totally get:
1. Dice are sacrosanct. Whatever they say goes. You roll the bones and whatever comes up comes up and cannot be changed.
2. You don't use dice. Either the game is contrived so as you don't have to use them (Amber DRPG), or you just treat the exercise as one of cooperative storytelling - a group of friends sitting around and taking it in turns to say "what happens next". (Two old friends and I did this once in Salamanca's Plaza Mayor for an entire day, taking it in turns to say one word at a time. It's more fun than it sounds, trust me.)
There's a third attitude towards dice which I think is like, totally stupid:
3. You follow the form of dice rolling, and generally speaking accept the results, but fudge them when it doesn't suit. This never made any sense to me. If "story" is so important than you feel the need to fudge dice rolls to further it, then you really may as well just stop rolling the dice entirely and adopt attitude 2, above. (Which is fine, by the way.) On the other hand, if you actually want to leave what happens in the game up to the gods of randomness and fate, you really don't have any business meddling in the decisions of those gods and sullying the purity of the randomness, thereby destroying the suspense and excitement which playing a game provides.