 Up until that point there was constant audience turnover in comic book readership. You did have some die-hard fans who started reading in the 30s and kept reading, but generally speaking kids would read from about 8 until maybe 12 or so, drop out, and then a new batch of 8 to 12 year olds would come in. So stories didn't have to be particularly sophisticated, they didn't really need continuity, they carried over from