I've seen a few threads on here about blade preference for Self Defense. It seems that Plain Edge is the professional's choice. For the reasons that it penetrates easier, punctures easier, and does not get caught on clothes as easily. It seems that most people will default and say to use what you feel comfortable with.
I saw a different thread about how sharp a knife should be for self defense. How I remember that one ending was that if it can cut, it is sharp enough. There was discussion about getting cut with a very sharp knife and not knowing you were cut until it was too late. There was also mention that the sharper the knife is, the easier it is to injure yourself with a deep wound. There is also some talk about doing damage to someone and it not stopping them.I was thinking about these opinions and it made me think: Wouldn't the extreme pain caused from getting cut by a serrated edge be beneficial to someone defending themself? If I were to get cut and instead of a smooth slice, I was torn, I think the shock alone will render me ineffective for at least a moment. It will also force me to decide whether or not to go on.