You might want to watch the documentary of the same name by Sandia National Labs: https://www.youtube.com/playlist?list=PLouetuxaIMDrht4F8xiS4AY-oLvCq77aA htt

You might want to watch the documentary of the same name by Sandia National Labs: https://www.youtube.com/playlist?list=PLouetuxaIMDrht4F8xiS4AY-oLvCq77aA https://www.youtube.com/playlist?list=PLouetuxaIMDrht4F8xiS4... About 2.5 hours (after sanitizing still-classified material). What has to be done to make it work "exactly when we want it to go boom" and also "never when we don't want it to go boom" is fascinating. Some of the other videos from Sandia and Lawrence Livermore are fascinating. One was about "well, how do you generate truly random numbers without leaking those numbers" (the random numbers used as crypto-keys in permissive action links), the answer turned out to be of the order of "use the radioactive decay from inside the warhead itself".