"Works" is a less absolute term than you treat it as. If I'm hacking together a little automation script, if the pretty path gives the correct answer, then it "works" to some degree. If that script graduates to part of a company workflow, I'd probably need to fix up some of the corner cases. Like if I wrote it to take in tab-delimited CSV files, but it breaks horribly when encountering a comma-delimited CSV file, I should probably realize that and either guard against it, or add a fix to handle it appropriately.