I was referring to legal definitions apart from this case.
We agree that premeditation does not apply if the defendant can successfully demonstrate self defense. Is that what you’re looking for?
I encourage you to read the case of Jerome Ersland. A pharmacist robbed at gun point. The court has ruled that he originally shot under the terms of self defense. But subsequent shootings were not self defense and were in fact 1st degree murder. The legal definition of what constitutes self defense is a good thing for people to know. Especially to know when you are no longer acting in self defense, of yourself, or of anyone else.