:::::::: Responding to Frederick, I would never doubt that complex numbers can be useful. So are approximations, estimates, predictions about the future, intuition, and prayer. The issue is whether a mathematical proof that resorts to use of complex numbers is as rigorous as an [[elementary proof]]. The answer is obviously "no".--[[User:Aschlafly|Andy Schlafly]] 01:17, 10 April 2012 (EDT) | :::::::: Responding to Frederick, I would never doubt that complex numbers can be useful. So are approximations, estimates, predictions about the future, intuition, and prayer. The issue is whether a mathematical proof that resorts to use of complex numbers is as rigorous as an [[elementary proof]]. The answer is obviously "no".--[[User:Aschlafly|Andy Schlafly]] 01:17, 10 April 2012 (EDT) |