Operon Anology

The more I learn, the more I do not know. Operon is a stretch of DNA required for enzyme production. It consist of the operator, the promotor and the genes they control. If the promotor is a door, the regulatory protein is the lock, and operator is the hole for the lock.  There are two kinds of doors. In the first type, called repressible operon, is usually open but sometimes need to be locked. The other type, called inducible operon, is usually close with the lock on. It will only open when the lock is taken away. Repressor can lock the first type of door and Inducer can open the other type.  Only when the door is open do the worker, RNA polymerase, enter and produce enzyme. However, those workers are lazy. They do not really produce anything but they make orders, mRNA, to ribosome factory.