Since there is no survival value in an animal's having an organ that is able to function when all its other organs have broken down to such a degree that the animal dies, it is a result of the efficiency of natural selection that no organ is likely to evolve in such a way that it greatly outlasts the body's other organs.
Evidence
There is no survival value in an animal’s having an organ that is able to function when all its other organs have broken down to such a degree that the animal dies.
Conclusion
It is a result of the efficiency of natural selection that no organ is likely to evolve in such a way that it greatly outlasts the body’s other organs.
Evaluate
The principle illustrated is that if there is no advantage to a whole for any of its parts to outlive the others, then the whole will evolve in such a way that no part will outlive the whole.