Screening is all about finding good proxies for the skills you need for the position. Typos on resumes might be a good proxy for something, but not necessarily

Screening is all about finding good proxies for the skills you need for the position. Typos on resumes might be a good proxy for something, but not necessarily attention to detail (since you don't know the process the resume went through to get into its error-free state). At the extremes, the proofing could have been forced on them unwillingly by an overbearing parent or partner -or- the applicant could have painstakingly run the resume through every checker out there and begged for lots of feedback from others. It's more accurately a proxy for the applicant understanding the context of various processes and the relative importance of a task. That may or may not be a skill you need in the job. Finally, if the resume error rate is higher or lower than what you observe in the candidate's live, observed writing/coding then you should take note assuming such errors are a proxy for what you're looking for.