And maybe that file happens to be an important encryption key. Or maybe a whole filesystem gets corrupted if some important metadata is. Or maybe your system de

And maybe that file happens to be an important encryption key. Or maybe a whole filesystem gets corrupted if some important metadata is. Or maybe your system develops a hardware problem over time, like an oxidized CPU pin or a contact in a memory slot and then you are getting flaky bits on a regular basis. ECC is useless until you experience a problem of those kinds. And many people will never do. But some will. I have.