Your hypocrisy is that you actually use mathematical models yourself in denying what the SB equation says, and then turn around and deny physics models have any use in explaining nature. {/quote]
The SB model states that energy flows in one direction..and when a radiator is in the presence of other matter, the amount it radiates is determined by its area, its emissivity, and the difference between its own temperature and the temperature of its surroundings...and every observation and measurement of that prediction bears out what the equation says...adding magic like net flow which would not alter the outcome is akin to adding a touch by a fairy, or a bit of unicorn perspiration which makes some magic thing happen which does not alter the final product...two way energy flow is fantasy..which does not alter the end result and can not be observed or measured.
Models allow us to deal with reality in a practical way.
Models that can be tested and confirmed in reality...
Maybe you should define what you mean by reality and how you can use "reality" to develop modern day technology.
Interesting that you require a definition of reality, as if there were more than one meaning to the word...as if you might rationally reject reality and substitute it with something else.
Here...have a couple... something that exists independently of ideas concerning it or something that exists independently of all other things and from which all other things derive.
reality is what is real...what is observable...what is testable...what is measurable...reality is the one way gross energy flow whose magnitude is determined in large part by the difference in temperature between a radiator and its surroundings which when observed and measured, always meshes with the prediction made by the equation....
Simultaneous two way energy flow, is not reality...it is unmeasurable, it is untestable, it is unverifiable..it is fairy dust..it is unicorn perspiration...it is not real.
And yes I have faith that the models of "reality" of QM are accurate to parts per billion.
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Based on what?...more models? You and your inability to separate reality from fiction are laughable.