It seems like we have a sample set of zero, as successes are not by definition or axiom noticeable. Certainly possibly noticeable but not required to be so. Failures are also not required to be noticeable. No earth-like planets sustaining life or having evidence of having sustained life have been documented yet. The probability estimate is useless, with a total margin of error.
It seems like we have a sample set of zero, as successes are not by definition or axiom noticeable. Certainly possibly noticeable but not required to be so. Failures are also not required to be noticeable. No earth-like planets sustaining life or having evidence of having sustained life have been documented yet. The probability estimate is useless, with a total margin of error.