Yes, of course I do. That wasn't the point, just that the actual weight is trivial compared to an average girl's strength. This girl, in particular, seems very athletic and fully capable of throwing up to 24oz without the arm straightening.
What you did say is...
So, to me, you blamed the "sequence" for the lead arm flattening. I contend that it is a more complex cause and effect.
I'm sorry. I didn't mean to come off as confrontational. I actually thought you had made a good point until I started to reason it out more. The answer is more than coil and stretch. Hand path is the reason for the arm flattening. The hands need to stay in front of the back elbow.
In this young ladies case I do blame a poor sequence for her lead arm flattening. In my first post in this thread I also said this:
"Notice how when she slots her back elbow, her front forearm simultaneously gets up off the letters. This is a key position that I look for. Yes, the front elbow straightens when she initiates her swing, but it doesn't collaspe. Which tells me she is doing a decent job of getting connected."
I included this comment in my post because IMO, establishing connection early is want sets up a good hand path. When I watch the clip of this young lady, I see a player who does a decent job (not great, but IMO the basic movements are evident and can be easily tightened up) of establishing connection. She is set up for a good hand path. Then at swing initiation, the front arm suddenly straightens; but it doesn't collapse. The fact that it doesn't collapse is IMO a big key to pin-pointing the cause of the front arm straightening. IMO, a front arm that straightens is not the same thing as a front arm that collapses. Two totally different problems requiring two totally different solutions.
Finally, I don't think you are being confrontational. Even if you were, it wouldn't bother me as this is just a message board. I was a little grumpy yesterday as I was not feeling well. I apologize if my post was a little testy.