Celebrim
Legend
Randomness is integral to the game because it takes the decision-making out of the GM's hands. When the GM rolls the dice, she must honor the result. If she doesn't, the players have every right to revolt and leave the game.
*sigh*
I recognize that there are tables that have that social contract, but it's a really dumb social contract that you usually find among tables where one or more players have been burned repeatedly by some jerk (or are themselves jerks) and instead of dealing with the problem as a social problem they blame the game, as if there was some sort of perfect game that could be run that didn't depend on the judgment and skill of the DM - just a process engine that churned out results based on dice rolls.
Seriously, there isn't.
Now sure, there is value to having a GM be a neutral arbiter, and I roll out in the open all the time - and pretty much every time a PC or NPCs success or failure is on the line. But 'fudging' a random encounter to avoid a repetitive result isn't even in the same class of moves as fudging a result to protect your precious plot or DM pet NPC, or whatever you as a GM are doing to rob your player of agency. You've conflated a method with a goal.