I would not even go so far. Assuming this isn't a mirage, we don't know what it's doing. It could be conserving momentum but in some weird non-obvious way, or e

I would not even go so far. Assuming this isn't a mirage, we don't know what it's doing. It could be conserving momentum but in some weird non-obvious way, or even doing something weirder. First question is whether it "works" at all, then how... and I would look for ways it might work while conserving momentum before challenging a conservation law. It's important to note that these are separate questions. The inventors of these devices seem to have their own theories, but these may be wrong even if the devices do work. At this point this is interesting but I won't get excited unless there are more replications. I would say that it seems to not be an "e-cat" situation. There are a minimum of two independent replications. So it would likely be error rather than fraud if it is mistaken.