Yup. Rand() chooses a random float value for each entry. By default I believe it’s anywhere between 0 and 1. So it may divide the first bill by .76, then the second by .23, then the third by 0.63, etc… So you’d end up with a completely garbage database because you can’t even undo it by multiplying all of the numbers by a set value.
There’s also the idea that as employees rise through the ranks, they have a better understanding of how their old jobs are done. Let’s say you’re in a manufacturing job: Nothing is worse than being managed by a business degree who doesn’t even know how to turn on the equipment you use every day. Because that manager has no idea what is and isn’t possible to do with the machinery, what kinds of timeframes to expect from jobs, etc… So you’ll end up getting unrealistic expectations, based purely on numbers on paper.