As yardsticks to measure the effectiveness of information retrieval there exist those called 'recall ratio' and 'precision ratio'.
情報検索の効率を測る尺度として、再現率と適合率というものがある。
In my work, I sometimes simply determine an area with a tape measure.
時々、仕事がら簡易に巻き尺などで面積を測定することがあります。
If your ability to accomplish a job does not exceed the peak (hump), on the difficulty scale for one job (project), then no matter how long you wait it will not be solved.