Now I’m curious, what kind of marital art or defensive school/ technique do you practice?
I currently hold Dan rank in Judo, Tae Kwon Do, Kali Silat, Wadoryu Karatedo, Kendo and Iaido. I have studied Wing Chun with Augustine Fong in Tucson Arizona, attended numerous seminars by Bill Wallace, Dan Inosanto, Joe Lewis, and Chuck Norris to name some of the more famous ones. I've learned more about timing and footwork from Kendo and Iaido than from any of the other arts I have practiced and I currently practice Kendo and Iaido on my own. I do teach defensive tactics at my police department and I visit several of the schools in my local area on a fairly regular basis. I can't say that I use the techniques of one any more than another, but Kendo has taught me much about tiny fractions of an inch making all the difference in the world as to whether or not a particular move works.
PS: What's "Non sequitur"?
Something that doesn't address the argument at hand. Granted, the portion of your reply that I called a non sequitur could also have been called an argumentum ad absurdum (argument taken to the absurd), but it also fit the definition of non sequitur since I wasn't talking about actually being attacked by a professional (American)football player.
I don’t see the point of practicing something that would work better against a bad guy wearing one vs. an attacker with NO helmet or plate armor.
You still forget my most important point which is that it works with less probability of causing injury to oneself, whether or not the opponent is wearing a helmet. We've already had other posters admit that punching has caused jammed wrists, broken bones, etc. We also have one poster who caught a finger on someone's clothing while using an open hand technique, so neither technique is guaranteed safe. In your argument you asserted that an open hand technique is not effective. I say that both are effective against certain targets and should be used where there is less chance of injury.
You don't see the point of having additional tools in your toolbox, and I do. Scratch the previous sentence, I just read your reply and obviously you do see the point of knowing additional techniques.
But I’m serious about being curious about what school of fighting or marital art practices and preaches this. I just wanted a straight forward answer. “We learn or practice this at XYZ ” kind of answer.
Actually, none of the hand to hand arts that I've practiced advocate exclusively open hand or closed fist striking techniques. Boxing is the only art I know where fighting is done exclusively with the closed fist. There are striking techniques in Judo but they aren't allowed in tournament competition.