The whole issue of denpressure is in proving why dense mass can be measured on a man made scale
No, the measurement is a sub-issue.
The most basic one is why things go down in the first place, why there is some force pushing it down.
You need to know that before approaching why a scale can measure this.
If weight has no number than you can't make any estimate.
What are you estimating on?
I didn't say it has no number. I said I don't know the exact number.
I am estimating based upon what it feels like, based upon past experience of lifting various objects of known weight.
Just like I can use this feeling or feeling how it resists motion to estimate its mass and how I can use my eyes and past experience of what distances look like to estimate volume without measuring them.
Heavy is a word that is used to the feel of the effort to lift a mass
i.e. weight.
Heavy and light are like large and small.
Heavy and light refer to weight. Large and small refer to volume (or length or area).
It requires no number
Because it is a qualitative measurement, not a quantitative one.
It being a qualitative measurement doesn't mean it isn't weight.
How do you tell the mass or volume of something?
I can estimate as explained above, or use various tools to measure it.
To measure mass, the simplest is based upon weight, but that is effected by buoyancy (which causes issues with calibrations for things like the kg). A better method is its inertia, aka resistance to motion. One implementation of that would be using a known spring (and rest of setup, which has been calibrated), attaching the object to it and having it oscillate back and forth horizontally. It oscillates in a predictable manner based upon its mass.
Another means of generating the force can be used instead of the spring.
As for volume, I can get a ruler or calipers or the like and measure each dimension and calculate the volume, or I can have it displace a fluid.
So just like weight, you can get a rough estimate based upon your senses or you can measure it with a variety of tools.
Weight cannot exist without measurement of mass. It simply can't.
Again, you are trying to play semantics.
Weight is a downwards force acting on an object. It doesn't need to be measured to exist.
If you want to try and have it be something else, then pick a new word.
For me to have an explanation for you to accept would mean your original indoctrination would be rendered useless and in now way shape or form will you ever concede that, no matter what.
Firstly, I haven't been indoctrinated. I have been educated and actually understand it and have done experiments to support it.
But more importantly, you having an explanation that works doesn't render the existing explanations useless.
It means there is an alternative.
Some things can have multiple explanations.
A good example is oxygen vs phlostogen.
With oxygen, a combustible material would burn by consuming oxygen and reacting.
With phlostogen, a combustible material has phlostogen contained within it which is released/consumed when it burns.
These were initially both explanations which could explain observations.
The 2 explanations existing didn't make the other useless.
What made phlostogen useless was its inability to explain things.
So no, you having an explanation that works doesn't make gravity useless.
In order for you to have an explanation that I accept you need an explanation that works and makes sense.
Saying it displaces the air and thus is pushed down makes no sense at all as you have no justification for why displacing the air should push it down.
So again: Why do things fall?