...except that 1) it hasn't happened in the real world, 2) it was proposed in December 1989 (if not earlier), about the same time as the first episode of The Si

...except that 1) it hasn't happened in the real world, 2) it was proposed in December 1989 (if not earlier), about the same time as the first episode of The Simpsons aired. https://ui.adsabs.harvard.edu/abs/1989JBIS...42..567E/abstract https://ui.adsabs.harvard.edu/abs/1989JBIS...42..567E/abstra...