The eternal language war gets physical. Python devs have gotten so comfortable with their elegant one-liners and no semicolons that the mere suggestion of writing public static void main(String[] args) just to print "Hello World" triggers a primal fight-or-flight response. Java developers, still traumatized from writing getter and setter methods for every single field, have decided violence is the answer when someone refuses to embrace their verbosity. "You WILL learn what a factory pattern is, and you WILL like it!" Meanwhile, the Python dev is just trying to explain that life is too short to declare variable types explicitly. The mob isn't having it though - they've got AbstractSingletonProxyFactoryBeans to implement and everyone must suffer equally.