A CAPA really just provides a systematic way for companies to address nonconformances, fix them, and prevent them from happening again. One benefit of using a CAPA to do this rather than just doing it in a haphazard manner is it makes the process much more efficient and therefore can ultimately reduce impact to product in the field. In addition, I think Sanam raised a good point about how a good CAPA system will trigger a thorough root cause investigation that will hopefully prevent the problem from occuring again.