<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">John,<div class=""><br class=""></div><div class="">I am convinced that black holes do not evaporate. There is a problem - not in the math - but in the fact that the physics behind the math requires quantum mechanics to hold at energies exponentially higher than the Planck energy. Indeed there needs to be modes of energy with energies higher than the mass of the universe in order for solar mass black holes to evaporate. See my post <a href="https://gravityphysics.com/2017/06/17/adam-helfer-black-hole-evaporation-the-trans-planckian-problem/" class="">Adam Helfer – Black hole evaporation? – the trans-Planckian problem</a> .</div><div class=""><br class=""></div><div class="">I like the idea that a great scientist needs to have experimental verification, of one of their main ideas. </div><div class=""><br class=""></div><div class="">--Tom</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jul 9, 2017, at 4:17 PM, Hodge John <<a href="mailto:jchodge@frontier.com" class="">jchodge@frontier.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><div style="background-color: rgb(255, 255, 255); font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 13px;" class=""><div id="yiv3653467855" class=""><div id="yui_3_16_0_ym19_1_1499631326316_3165" class=""><div style="background-color: rgb(255, 255, 255); font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 13px;" id="yui_3_16_0_ym19_1_1499631326316_3164" class=""><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2360" class="">I was asked if Stephen Hawking is a GREAT scientist. I said no.</div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2360" class=""><br class=""></div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2361" class="">This was part of a discussion about Philosophy of Science. I am aware he made a prediction about black holes evaporating and that he has made and lost several bets. To my knowledge the evaporating prediction has not been unambiguously verified by observation. Has he made a confirmed prediction not predicted made by other models?</div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2361" class=""><br class=""></div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2362" class="">A great scientist must have a unique prediction verified by experiment the also rules out competing models. Newton (in my view) was not a great scientist until the delayed return of Halley's comet.</div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2362" class=""><br class=""></div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2363" class="">The group is not composed of practicing scientist.</div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2363" class=""><br class=""></div><div id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2364" class="">What do you think and why? (a Philosophy of Science question).</div><div dir="ltr" id="yiv3653467855yui_3_16_0_ym19_1_1499631233416_2365" class="">Hodge </div></div></div></div></div></div>_______________________________________________<br class="">If you no longer wish to receive communication from the Nature of Light and Particles General Discussion List at <a href="mailto:tandersen@nscir.ca" class="">tandersen@nscir.ca</a><br class=""><a href="<a href="http://lists.natureoflightandparticles.org/options.cgi/general-natureoflightandparticles.org/tandersen%40nscir.ca?unsub=1&unsubconfirm=1" class="">http://lists.natureoflightandparticles.org/options.cgi/general-natureoflightandparticles.org/tandersen%40nscir.ca?unsub=1&unsubconfirm=1</a>"><br class="">Click here to unsubscribe<br class=""></a><br class=""></div></blockquote></div><br class=""></div></body></html>