::::: There is a logical circularity, and hidden assumptions, in using the earth to date the earth. But you omit them. [[Radiometric dating]] depends on assuming that decay rates have always been constant. But plainly that is false.--[[User:Aschlafly|Aschlafly]] 09:03, 29 January 2008 (EST) | ::::: There is a logical circularity, and hidden assumptions, in using the earth to date the earth. But you omit them. [[Radiometric dating]] depends on assuming that decay rates have always been constant. But plainly that is false.--[[User:Aschlafly|Aschlafly]] 09:03, 29 January 2008 (EST) |