Would you agree one's hearing limits are subjective?
They are not a wild guess because there is an actual stimulus but each subject will understand the faintest sounds differently.
In fact you could have some people claim to hear a faint sound when no sound occurred with the proper coaching.
Identical hearing tests if complex will yield different results between subjects.
threshold is the minimum level of physical signal one can experience physical external physical stimuli
You don't experience the stimulus. A cell is stimulated by it.
Vibrating air hits a thin membrane. The membrane vibrates as well.
You don't experience vibrating air or a vibrating membrane. You experience a sound.
Sound like color only exists as an experience.
Vibrating air is not sound. It is a stimulus that causes a brain to create the experience of sound.
It is another hand hitting another switch.
When the hand turns on the radio and the radio plays Led Zeppelin the hand did not give the radio information about Led Zeppelin.
A vibration is not passing information about sound.
It is stimulating the evolved brain to reflexively create the experience of sound.
no one can see your visual threshold to red light.
There is no such thing as red light.
There is energy that a brain turns into the experience of red.
And a person can say with much more accuracy when they perceive a stimulus than when they perceive an "urge".
But it is subjective information.
Yet we know that individual humans have hearing and visual limits and that those limits are more or less the same among normal hearing and seeing individuals whatever sex they may be.
All biological traits have scope and limits.
More or less the same means they are all slightly different. If you did complex hearing tests you would only find variation.
Variation is what drives evolution.
A random set of numbers has a mean and a standard deviation.
Statistics can be used to pretend variation is not what exists.