For instance, I have two screens at work. Some times I prefer switching them off and on using the command clk x one, meaning leave only the principal screen and switch off the side screen. Or sometimes I want to run clk x left to indicate that I want only the left screen on. clk x one and clk x left do exactly the same things but are slightly different representations of the same thing. Instead of adjusting my brain to try to fit to one way of thinking, I use aliases to make both available. see shape your tools, don’t let your tools shape you.