There's a huge difference between mathematical calculations having round-off error and computations that are not mathematical calculations exhibiting something

There's a huge difference between mathematical calculations having round-off error and computations that are not mathematical calculations exhibiting something akin to round-off error anyway. It's like giving someone a $10k check and seeing them get $9,999.99, and then getting irritated when people try to investigate what happened because it's only a penny to you. It's kind of missing the point that the error logically shouldn't be there in this situation.