The original study showing life could survive in Arsenic really did not demonstrate anything impressive. It did not show that a "second tree of life" evolved pa

The original study showing life could survive in Arsenic really did not demonstrate anything impressive. It did not show that a "second tree of life" evolved parallel to our own, which would have shown that life is likely to emerge on any planet. No, instead, they only showed that they discovered some kind of extremophile in our own "tree of life" that could tolerate Arsenic. And even that claim was not rigorously proven.