That is very small though, for a "breakthrough". That's my issue. We already knew that laser ignited fusion worked (that it triggers fusion). And we still don'

That is very small though, for a "breakthrough". That's my issue. We already knew that laser ignited fusion worked (that it triggers fusion). And we still don't know it can produce more energy than it consumes overall (one of the big questions for this sort of fusion). Really, we have gone from being 0.5% efficient to 1% efficient (I believe). One way to describe that is doubling the output. And that is technically true. But it's quite misleading as it will have no actual impact in the real world. Add to that that this was quite predictable. And that we will need at least 3 very big breakthroughs before this is viable (much more efficient lasers, a continuous method and either replacement of the fuel or a very easy supply of deuterium). I just don't see this as a big deal. That's why I called it a milestone. It's progress. But it isn't huge, unexpected, change-in-the-real-world progress.