You're spinning the odds a bit. The gross majority of data in memory is never written to persistent storage. If you're a typical consumer, then of that data th

You're spinning the odds a bit. The gross majority of data in memory is never written to persistent storage. If you're a typical consumer, then of that data that is written, only a tiny fraction is user data, and of that user data, media usually represents most of the volume. Media is tolerant to a random bit flip. Enterprise needs to worry about these things due to sheer scale and things like automatic propagation, but the odds of getting a bit flip in your tax spreadsheet or research paper and then writing it to disk are incredibly small, and personally I figure versioning/backups protect me from a significant portion of that (small) risk. Which brings up disk crashes. Not to divert the conversation, but disk crashes are massively more dangerous than bit flips, and so many people haven't taken even the first steps against them...