 The Hawking temperature of a macroscopic black hole is unimaginably small. For the black hole at the center of the Milky Way (Sagittarius A*), approximately 4 million solar masses, it is approximately 10-14 Kelvin. Even a black hole of one solar mass would have a temperature of only about 60 billionths of a Kelvin. Direct experimental verification of its existence therefore seems beyond the realm of the imaginable, at least for macroscopic black holes. (If nothing else, it would be utterly swamped just by the ordinary cosmic microwave background radiation, itself approximately 2.7 Kelvin, a raging inferno in comparison.) 