High accuracy, low precision

High precision, low accuracy

Any plan is in essence a set of steps to perform in order to reach a given goal. Every goal and task has two important, but unfortunately often mixed characteristics: accuracy and precision.

Precision tells about the level of the detalization. A promise to make your database handle four simultaneous requests tomorrow at 9:30 is a very precise promise. A promise to make it handle hundreds of requests sometime next year is not very precise.