No kidding: “One thing I have learned about Microsoft SQL Server is that regardless of your years of experience with the product or any given part of it clustering, SSIS, etc., there is always something left to learn – even things that in retrospect seem obvious well, duh! were new at some point, and there is always – always – something left out there waiting for you to discover.”

via Backup Checksums and Trace Flag 3023 – SQLServerCentral.