Imagine if you could somehow travel back in time and prevent specific business-impacting occurrences of poor data quality from happening. You could reactively wait and see if something bad happens, and if it does, then you could travel back in time and proactively prevent just that particular bad thing from happening to your data quality. This approach is known as Retroactive Data Quality — It’s been implemented at least three times: http://www.ocdqblog.com/home/retroactive-data-quality.html
Data governance is data’s best friend. Data governance will help you take good care of your data, which in turn will take good care of your business. Basically, the success of your organization comes down to a very simple question — Are you a DG person?