There are lots of areas in which the data is reproducible but local continuity (and checksumming!) are still extremely valuable.  Think things like large iso files, dvd rips or even intermediate stages of data analysis. Since I can reproduce them having a backup might not make sense but I still don&#x27;t really &#x2F;want&#x2F; to have to go to all that effort.<p>Especially things like scratch space for analysis you <i>really</i> don&#x27;t want bit flips since you&#x27;ve maybe silently invalidated later stages.