Thus the conquest of actual infinity may be considered an expansion of our scientific horizon no less revolutionary than the Copernican system or than the theory of relativity, or even of quantum and nuclear physics. [.A. Fraenkel, A. Levy: "Abstract Set Theory" North Holland, Amsterdam (1976), p. 240]
Inaccessible cardinals on the same scientific level with GPS, nuclear power, or space travel? No, rather with with Star Trek or Dallas or, as it is a genuinely German invention, with Schwarzwaldklinik.