I know almost nothing about cold fusion and theoretical physics in general, but as a guy who has read some Popper and Hume I&#x27;ll chime in with an obviously subjective opinion, and say that after reading all the HN comments and parts of the article the first thought that came to my mind was this: &quot;extraordinary claims require extraordinary evidence&quot;.<p>Interestingly enough that exact quote is present in TFA, but in a manner that makes it debatable:<p>&gt; This is not to deny that there is truth in the principle popularised by Carl Sagan, that extraordinary claims require extraordinary evidence. We should certainly be very cautious about such surprising claims, unless and until we amass a great deal of evidence. But this is not a good reason for ignoring such evidence in the first place, or refusing to contemplate the possibility that it might exist<p>Paragraphs like this one remind me of a work-colleague of mine, who I try to convince from time to time during our cigarette breaks that aliens have not visited our planet and that they&#x27;re not just &quot;about to arrive&quot;, impending asteroid apocalypse be damned. At which point she almost always responds to me like this: &quot;paganel, yours are valid opinions, but we cannot refuse to contemplate the possibility that one day they may arrive&quot;. This also reminds me of how early Christians actually believed that the second arrival of Christ was just around the corner. Whatever this guy writes about and whatever he believes in, it is not about science.