Dummy

In various contexts, a "dummy" is a stand-in or placeholder used to represent something else during testing, development, or demonstration. For example, in computer programming, a dummy variable might temporarily hold data. In manufacturing or safety testing, a dummy can be a mannequin used to simulate a human for testing purposes. Essentially, it helps facilitate processes without using real or final versions, allowing for adjustments and safety assessments before the real thing is involved. The term emphasizes that it’s not the final product but an interim tool or model.