I never said that ZZ is bad, in fact, I'm pretty sure that if you learn full zbll than, you could be a top cuber, but for a CFOP solver like me, I also found it usefull to learn ZZ just to understand the concept of oriented edgesI agree that you should learn ZZ to improve your CFOP for EO recog, but I don't agree that ZZ is bad, but this isn't the thread for that. DM me if you want more details.