No one ever said it was. Still factually speaking, the accepted evidenced backed theories of the day, are supported by the majority. If there is no "valid" derivation, it is then a total dismissal. And again, many other professionals seem to disagree with you. I'm confusing Hawking Radiation with nothing, and as you should well know, no scientific theory is proven. I said even the BB has problems....no mention of any trans Plankian problem. Many other professionals disagree with you. https://royalsocietypublishing.org/doi/abs/10.1098/rsta.2008.0062 Dumb holes: analogues for black holes Abstract "The use of sonic analogues to black and white holes, called dumb or deaf holes, to understand the particle production by black holes is reviewed. The results suggest that the black hole particle production is a low-frequency and low-wavenumber process."