Edited sentence: Previous writing by the former creative teams, including the character's creator, Karl Kesel, has dealt with Superboy's genetic structure and origin.The Lex Luthor DNA retcon is widely criticized as below par writing on the part of Geoff Johns.The retcon is regarded as the sloppiest writing Geoff Johns has done to date, since the biggest evidence for it was the theory that Tim Drake with a laptop was better at analysing DNA than Emil Hamilton in a genetics lab