SSDD says we are being fooled by instrumentation.
Of course you are...it is a demonstrable fact. You believe that an instrument cooled to -80F is measuring back radiation while an instrument at ambient temperature can't because of the amount of noise...all the while believing that backradiation is happening at a magnitude that can alter the global temperature...but can't be measured with an instrument at ambient temperature...of course you are being fooled by instrumentation.
He doesn't dispute that the results are correct but he says we aren't actually measuring radiation.
The result is that energy moves from the warm inside of the sphere to the cooler outside...of course you are measuring radiation moving from the inside to the outside...it is misinterpreting the results, and ignoring obvious flaws in the experiment and believing you are demonstrating something that you aren't that is the problem.
If you measure the height of a tree by observing its shadow and the angle of the sun that is also being fooled by instrumentation because you're not actually measuring the tree. Or something like that.
Of course not, because you can actually measure the height of the tree to check against your trigonometric calculation...you can't actually measure energy moving in two directions because it doesn't happen...energy movement is a one way gross flow from warm to cool.
Stefan's experiment produced data that allowed the radiation to be quantified and qualified into a Planck curve for each temperature. The shape for each curve is congruent to the shape of any other curve for temperature.
The experiment is not showing what you believe it to be showing...you claim that energy can not move from the outside of the sphere to the inside of the sphere when the very energy that is heating the inside came from the outside...and since neither the sphere nor the interior of the oven can ever be brought to perfect thermal equilibrium, there is going to be energy movement across those temperature gradients no matter how small they may be...the experiment doesn't demonstrate what you claim it demonstrates.
You are trying to demonstrate the perfect theoretical conditions of the model with a flawed experiment in reality.