Maybe its because I work on embedded firmware, where detailed logging is occasionally at the expense of device function, but I find the absence of blinking LEDs

Maybe its because I work on embedded firmware, where detailed logging is occasionally at the expense of device function, but I find the absence of blinking LEDs really unsettling. I've repeatedly removed and replaced the batteries on my thermostat's remote temperature sensor, because there's no visual feedback that its otherwise working, and my house was cold. The absence of "working" lights when I know I'm doing a processor-intensive operation on a computer is similarly unsettling. Its not directly actionable feedback, certainly, but it can be a proxy for a more directly actionable, but more onerous to implement or use, feedback mechanism.