Uhm… would you care to present your credentials, and documentation for your beliefs?these are all stupid and unsupported theories…
these are all stupid and unsupported theories; no physical mechanism to trap all that heat during 5 billion years, no physical mechanism to explain the starting incredibly high temperature the core should have had due to the merger of planetesimals, no physical mechanism to explain the high temperature of the original dust disk around the sun, no physical mechanism to explain an hypotetical gravitational collapse of the new condensed planet earth, no physical mechanism to explain the amount of energy producing the heat by radioactivity decay, no data to show the huge loss of temperature from the core during past earth's life, no data to show the necessary production of many types of radioactive isotopes as a result of the fission process, no physical mechanism to explain why the same heat creation process is not ongoing in all the other solar system solid bodies