Jezza - how "helpful" do you want me to be? I was asked to provide a clip, so I provided the match video and the relevant time stamp. I'm not about to spent 30 minutes creating a YouTube video or a GIF (both of which are at the border of my competence) in order to save you 5 seconds getting to the right time stamp.
As for your points n the reasoning, and theory as to the future - Valid points all, I just happen not to agree with them.
I do agree that high tackles are rarely the cause of concussion, and that head-ground is more likely (eg North), or the tackler getting their head in the wrong position (eg Ellis). However, I don't see how the game can legislate against that; and high tackles do cause many non-concussive injuries, and the occasional concussive, have always* been illegal, and both can and should be legislated against.
*for a certain value of "always" - no idea what the law book may have said in 1862
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This is the situation i picture: I have the ball 5 metres away from try line and my clone is standing on the try line. I have to score he has to stop me. With the new directives, if we played 100 times, i'd either score 100 tries, get 100 penalty tries or a combination of both adding to 100.
I'm at risk of agreeing with cooky here, which always makes me feel a little dirty, but... take a look at Newcastle V Bath from Friday night (linked above) the new directives appeared to make no real difference to those phases of pick-and-go camped on the try line. Certainly not a dozen tries or a dozen cards for the dozen phases.
I think this is a case of preconception Vs evidence.