But times have changed. The science has gotten better. Continuing down the same path because of the fear of possibly identifying a weakness in your line, or for producing carriers or affected pups in the past, is the wrong way for a breeder to look at the situation. Instead, they should embrace the science, use it to better their lines and shout it from the rooftops - for carriers and affected dogs can still be bred, it's just a matter of using science to choose a mate that will produce the healthiest puppies. Denying science out of fear of past mistakes is no more useful than the ostrich with its head in the sand.