[Pamar]

I am not American either. I pointed this out because you seemed to imply that USA was the best example of how to properly use a mathematical approach.

Also, I think it is appropriate: what we had here was someone "demonstrating" why a specific policy works: "it works because our math model proves it works". So instead of going for an empirical proof everybody was expected to be ok wih this because, look, we have math. Also, if it is not working for you it's because you are not doing it right.

In a proper scientific discipline you design experiments to verify if your formulas are correct: if you send a rocket to Venus and it crashes back on Earth you can't just say "you didn't it right, I have an Excel sheet that says it should have reached the target"...