I, personally, am interested in retrocomputing, amateur/hobbyist electronics, and hobbyist computing (including semiconductors [2]). While these techniquess and devices may be light years away from anything resembling a computer that can compete with SotA commercial offerings, they do offer the promise of “keeping the candle lit” as it were. I will note that if you follow Sam Zeloof’s chronicles, he progressed through the earliest phases of semiconductor development far faster than the industry did back when it was pioneering the technology. Of course, he had the benefits of knowing it was already possible and access to the written knowledge of the experts who went before him.