Yes I do.
I have bad news for you. You absolutely do not understand what you talk about. Sorry.
Then please tell me what I said wrong instead of judging.
I just said that SA-CD provided so-called hi-res sound, with higher sampling rate or horizontal resolution (e.g. 192khz instead of 44.1) and higher bit depth or vertical resolution (i.e. 24 bits instead of 16) than normal Redbook CDs.
This was by no means a complete description of SA-CD (I didn't talk about DSD for instance) because it was not intended to be - just to tell my doubts about the usefulness of high-resolution audio. The DSD technology, which I am well aware of, don't worry, does not change the fact that we are talking about high-rez audio, just like DVD-A which uses PCM. You will tell me DSD is one-bit, and you'll be right, but at the end it's just high-rez audio. Besides, according to the Wikipedia article you quoted yourself, research conducted in 2007 proved with double blind testing that people could not make the difference with Redbook CDs - all things being equal of course. I am also well aware of this (excellent) research.
I don't like to praise myself but I have been a mathematician and a computer engineer for 20 years, so I don't take lectures on this tone.
I challenge you to find anything wrong in the simple facts I stated. Others on this forum perfectly understood what I meant.
Arrogance and lack of argumentation will lead you nowhere.