[QUOTE=YungChun;770919]Perhaps Terrence could be more constructive and kind in his criticism of other’s videos.. But at least he’s not using personal attacks or name calling…
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I gave my constructive criticism in discussing “Sparring Clip #1”, so I didn’t feel the need to repeat it.
When folks make observations, good or bad, about something, either the point made is valid or it is not.. Tact is another issue.. A person need not “prove” that he/she can perform any particular skill to make the point a valid one..
You are exactly right. I don’t need to play the violin to recognize when it is being played poorly. 
And, if we extend their “logic”, if they are going to comment too, even with a positive comment, shouldn’t they need to prove they can perform the particular skill too? How else do they know it is “good”?
Statements and facts stand for themselves.. When you attack the person and not the idea you are employing an “Ad Hominem Attack”.
Yes, ad hominem attacks are logical fallacies. But beyond that, person’s using them if most often signalling, IMO, the inablity to offer solid reasons in support of their position (when I can’t refute what you say, I call you a bastid). So I don’t mind people resorting to name calling – for me, it’s the equivalent of them admitting they can’t respond intelligently.
Attack the idea if you can… Not the person…
It boils down to the “if you can” – if a person can attack the idea, can support their position with intelligent, rational reasons, can refute an assertion, they would. They only attack the person when they can’t successfully attack the idea. That’s why, as I said, ad hominem attacks are basically admissions that they got nothing.