The reverse of precision is imprecision/inaccuracy/inexactness, which is always the result of an accident or a spontaneous event that happens by chance with no one guiding the outcome.
Jack Benny used to play the violin very badly - but my father always used to say that he must have been a good player in real life to play it that badly on stage. I don't know if that's true or not but if you stop and think about it, comedy takes a lot of planning. What Lucy and Ethel did at the candy factory looked like chaos but it had to be carefully choreographed and rehearsed.
Reality is often a bizarro world where nothing is what it seems. What seems to be planned is random and what seems to be random is directed by inexorable forces.
Were it not for the precise relationship among the first 60 discovered elements on the Periodic Table, would scientists have been able to accurately predict the existence of forms of matter that at the time were unknown?
The first element has one proton, the second has two, the third has three and so on. That isn't a sign of planning; it's just the only way it could be. It didn't take a committee of experts to insert the number six between five and seven. And's it's no great feat to predict the existence of the number nine.