long time ago, maybe in russian journal "Radio" ~198x, there was someone there describing that if one gets certain transistor from particular batch of particular factory/date, and connect it in whatever weird way, will make a full FM radio (or similar-complex-thing).. because they've wronged the yields. No idea how they had figured that out.

But mistakes aside, what would it be if the chips from the factory could learn / fine-tune how to work (better) , on the run..