Solid‐state “thermonuclear fusion”

In the search for a power‐producing fusion reactor the experimental devices built have usually been at least roomsize, cost millions of dollars, and taken many years to construct and debug. Each time a new idea has been proposed it has required much time, labor, and funds actually to get such a device operating. Once the device is built, experiments are usually long and arduous, and almost invariably, one or more instabilities has put in an appearance.