Even that turns out to be pure fiction. So far all black holes are just mathematical calculations on paper that have yet to be definitively found in nature. I kind of like Stephen Hawking's approach to the problem though. He worked out the math that shows a rotating black hole will lose energy through evaporation. That would suggest the reason why black holes can't be found. Of course if he ramps up his math a little bit, he could show that all black holes evaporate in an instant upon creation. Then he's got the real reason why stars going nova outshine a whole galaxy of stars just before they wink out. And black holes would be declared unstable and never exist in nature. My whole point to this is the TDU is based on mathematical fiction. Just like Eric Brown's statements so far.