Board Thread:Off-Topic/@comment-17114085-20170629235146/@comment-24510587-20170826135012

That is about as valid as saying the statement "ravens are black" is wrong because albinos exist. The fact that they are naturally black isn't changed by rare anomalies. Similarly, there are cases of mutated sheep being born with two heads (though almost always stillborn), but that doesn't mean that the claim "sheep have one head" can't be considered a reasonable assumption.