> If Hawking Radiation can never be observed till the heat death of the universe That's a pretty big "if". As I suspect you know, how much Hawking radiation a

> If Hawking Radiation can never be observed till the heat death of the universe That's a pretty big "if". As I suspect you know, how much Hawking radiation a black hole generates is inversely proportional to its size (it's probably an inverse square function to be precise, I forget). A consequence of that is that supermassive black holes, the kind at the center of galaxies that we are most likely be able to indirectly (or even directly) observe, will generate almost none and whatever is generated will likely be outshone many orders of magnitude by the accretion disk anyway. But... small black holes should shine extremely brightly, albeit briefly. A black hole resulting from a supernova will take a stupendous amount of time to lose enough mass (from Hawking radiation) to get this small and the window of time is so small we're unlikely to ever directly observe this. But if we can ever figure out a way to lase gamma rays we can construct so-called Kugelblitz black holes (that some call the ultimate battery or even the ultimate computer). Granted there's no theorized let alone practical way of lasing gamma rays, which is a problem. But nevertheless, the theory of Hawking radiation makes testable predictions so yes, it's unlike Many Worlds (or even, honestly, string theory).