My understanding is that it&#x27;s a means of checking a dataset very quickly with a 100% chance of avoiding &quot;false negatives&quot; but no guarantees around false positives.<p>Some interesting use cases around them for very high performance filtering operations, but probably overkill and overthink for the vast majority of issues out there. It&#x27;s something you&#x27;d generally looking at if you were trying to performance tune a lot of checks against a big dataset.