I was scanning ATM and couldn't help asking myself, why is someone who proposes a theory required to do the maths?
Did Fresnel do the maths when Poisson told him his theory predicted a bright spot no one had anticipated.
When De Broglie did the maths, was he not shunned, regardless, by the doctoral committee?
Did Einstein do the maths of the Schwarzchild solution?
What is the true scientific way? Should the presenter hold the onus of solving all numerical problems? Should the scientific community do their own maths and compare?
Note to self: this should have been a poll!
I personally see no problem with someone saying "I calculated A based on your theory and got values B. We have different answers which should be explored further."
I also see no problem with "My theory predicts values B for conditions A. Do the calculation yourself to verify."
When I'm in a calculus study group, I never say "That answer is wrong, fix it!". Instead, I do the calculations as well, step by step, and compare along the way. In this manner, the problem is easily located.