This reminds me of an article discussing the perceived outcome of RNG decisions in video games. In many types of games, the system will display a percentage chance of success for a given action which allows the player to make risk assessments regarding possible choices. Unfortunately, the unmodified RNG behavior creates an unpleasant experience for the user because the unweighted random outcomes feel "unfair" when failure streaks pop-up, thus, game designers almost always introduce some type of magic cushioning to the RNG so that the user never faces too many repeated failures.