You know what would be a pretty useful? Cold fusion. It just might revolutionize energy production. Someone just has to invent it first.
In 1989, Martin Fleischmann did. Well, he thought he did.
Fleischmann, a Czech-born Jew, together with the goyishe Stanley Pons, conducted experiments at the University of Utah in the 1980s. In 1989, they announced that "a sustained nuclear fusion reaction" was obtained. Cold fusion was here! Which clearly explains your cold fusion-powered toaster, refrigerator, and automobile of today...
Yeah, not so much. As it turns out, Fleischmann's experiment simply could not be replicated. What the hell happened? Did he fudge numbers like we (allegedly) did in high school chemistry class? Or did he simply rush to judgement? Fleischmann took his secret to the grave.
In any case, Fleischmann's discovery was quickly debunked, and cold fusion went back to being undiscovered.
We're still holding out hope for that cold fusion-powered toaster...