For non-critical subsystems, sure, but certain critical infrastructure has to get it right every time or it's an abject failure (barring interference from random cosmic rays and similar levels of problems). Filesystems have been around for the better part of a century, so should fall into the category of "solved problem" by now. i don't doubt that advanced filesystems are stupendously complex, but i do doubt the _need_ for such complexity beyond the sheer joy of programming one.

> It is better to stick with it even if it fails once or twice.

Like a pacemaker or dialysis machine, one proverbial strike is all i can give a filesystem before i switch implementations.