What if the task is one-off? would you still care to write a proper utility? As an example, you have some data you need to fix as input to some program. you in

What if the task is one-off? would you still care to write a proper utility? As an example, you have some data you need to fix as input to some program. you incrementally try to fix it with perl: 1) run program with data, observe errors, infer what needs fixing -> 2) write perl to fix data, modify data -> 3) repeat from (1) until no errors You have no expectation you'll ever need to fix data corrupted in the same way ever again.