Here is another question for Jed – probably factually unanswerable but informed opinion will suffice.
This experiment is so similar to what has been done before over 30 years – what is the one detail which makes it so much more robust? On the basis of a few reads – it looks to me like the one crucial detail could be the very thin application of palladium to the nickel mesh by mechanical action. That would be mind boggling if true. Most curiously – Mizuno indicates that LOADING of deuterium is no longer an important parameter. Bizarre.