The eternal battle between readable code and cryptic shortcuts! That one dev who insists on using x , tmp , and mgr instead of userAccountBalance , temporaryStorage , or connectionManager . Future maintainers will spend hours deciphering what bm.prc() does while the original author smugly thinks they're being efficient by saving 17 keystrokes. Bonus points if they also comment with "obvious function, no explanation needed." Clean code isn't just nice—it's practically a moral obligation. Your colleagues aren't mind readers, and neither is your future self at 2am during a production outage!