reinventing the wheel to me means this, and i think its what mrs la meant by the coyote analogy.
if someone says they are going to breed up a line of border collies that are baydogs, that to me, is reinventing the wheel. why go thru all the work, trouble, culling, breedings, and border collie searching to make a project like that work, when there are ALREADY numerous baydog breeds to select from. not only are you creating something that already exists, you are subjecting yourself to a huge amount of expense in time and labor to do it.
it's much easier to start with something that already fits the bill as a bay dog, then refine the line's characteristics to suit your intended end goal.
OWL I agree 100% with what your saying and that's my point as well. That's the same advice I gave in a different thread, but about catch dogs.