@MarcBuergi The masks don't work!!! This proofs it once more!
Austrians versus Keynes
That's all you need to understand..!.
You don't have to be an Einstein to understand this....only you may have to do an effort to understand it.
My 40 years of experience tells me that you don't have to be rich to understand it, you don't need to have a Master's degree,....common sense does it ! As a matter of fact, some rich people will never understand it and never act accordingly.