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As a demonstration of reproducibility, samples of palladium-nickel-zirconium oxide powder, taken from a single batch of production, were employed in independent parallel test runs at laboratories at Kobe University and Tohoku University. Both laboratories observed sustained excess heat over a period of more than 10 days. The data were qualitatively and quantitatively similar between the two laboratories.

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Reproducibility means a recipe that anyone can reproduce. Anecdotal reports of that sort don't count. They can be explained by incompetence or even fraud.

What the whole sorry cold fusion experience shows is that if you have enough people trying to do something, some will get positive results, regardless of whether the phenomenon is actually real. A real tip off is how variable and mutually inconsistent the ephemeral positive results are. This is a sign they are experimental artifacts, not anything significant.

Exactly. The fact that reported positive results always seem to be at the limits of detectability, whatever the equipment used, is a huge red flag that the results are probably artifacts.

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