All the quotes you posted basically say the same thing; There is no evidence for the efficacy of xenon. That's scientist speak for: "Xenon doesn't work".
All the quotes you posted basically say the same thing; There is no evidence for the efficacy of xenon. That's scientist speak for: "Xenon doesn't work".
Depends, it can also mean "this hasn't really been studied well" if there just hasn't been much research into it. I just pulled all the times it talked about studies or another expert talking about it being ineffective.
It depends. It might mean that there are no studies that show efficacy or the lack thereof.
A lack of evidence doesn't mean it doesn't work. It depends on what you mean by 'evidence.'
Take one or two reports.
A scientist would say, 'that's an anecdote.'
A lawyer would day, 'I can send you to jail with those two reports.'