A smartphone camera has no moving parts. It takes a photo silently. Yet, almost every phone plays a pre-recorded click-clack of a mechanical shutter when you press the button.
These are mechanical ghosts. They are sounds designed to comfort us, replacing physical feedback that no longer exists in a digital world. We deleted the mechanism, but we kept the noise.
It's similar to the artificial delay I wrote about recently. We don't just want a system to work; we want proof that it worked. We crave the auditory confirmation of a physical action, even when the action itself has been abstracted into software. We are deeply uneasy with silent systems.
Electric vehicles are another example. They run almost silently, which is arguably a massive improvement over combustion engines. But because pedestrians (and drivers) rely on engine noise for situational awareness, EVs are now legally required to emit artificial sounds at low speeds. We are synthesizing the past to make the future safer — or at least, more familiar.
It makes me wonder what other useless echoes of the past we'll drag with us as our technology evolves. Will our personal AI assistants always need to have synthesized voices and "type" to us, just so we feel like we're interacting with something recognizable?
We are terrified of the void. If our technology doesn't make a noise, we'll invent one for it.





