Ah, maybe there is a point so far not mentioned: For a hint, the work was at the NIF, National Ignition Facility. Even to start a wood fire, need an ignition

Ah, maybe there is a point so far not mentioned: For a hint, the work was at the NIF, National Ignition Facility. Even to start a wood fire, need an ignition facility. Then the fire continues on its own putting out much more energy than was used with the matches or whatever during the ignition. Then the energy from the fire ignites the wood that is not yet burning. As we now know, once the nuclear reaction is ignited, the reaction generates more energy than was used with the lasers for the ignition. Then, sure, we can expect that the energy of the reaction should, without more energy from lasers, have the reaction continue. Right, I'm ignoring a long list of what are sometimes called engineering details, e.g., that this is inertial confinement fusion! Ah, at one time I worked for KMS, that is the company of Kip M. Siegel, as at Google and Wikipedia: "KMS Fusion was the first and only private sector company to pursue controlled thermonuclear fusion research through use of laser technology." https://en.wikipedia.org/wiki/Kip_Siegel https://en.wikipedia.org/wiki/Kip_Siegel The report at the time was that KMS had achieved fusion neutrons. Hmm .... I didn't work on fusion but was hired because I knew quite a lot about the fast Fourier transform (FFT).