@galvarado69 : did you actually read the article you posted? Everyone has a Google Machine these days.
It was not a controlled test. It was an Internet poll. Which are typically only attended by cable deniers like yourself. Copy / paste:
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In order to determine if people could hear the difference between a coathanger and a cable, we posted a poll in an earlier version of this article. We asked readers to listen to ten audio samples—two head-to-head at a time—and rate which ones sounded better than others, or if they were the same. In every single one of the five comparisons, one sample was recorded over a coathanger cable, and the other was recorded with a high-end cable.
On SoundGuys, the “both sound the same” option won every single poll question handily. While we didn’t have a large sample size, it’s more than the 2008 study’s sample set, so I’m happy with this.