> First, we don't see the spam that was outright blocked, so we have no idea of what the false negative rate is Yep. Perfect example of the Survivorship Fallac

> First, we don't see the spam that was outright blocked, so we have no idea of what the false negative rate is Yep. Perfect example of the Survivorship Fallacy/Bias https://en.wikipedia.org/wiki/Survivorship_bias https://en.wikipedia.org/wiki/Survivorship_bias