@davedarko The concept of the costs incurred from spending money is in German #Opportunitätskosten and #english #opportunityCost see 03:34 min in diesem Video "Opportunitätskosten"
https://youtu.be/9s8_Ds4EZr4
So ein totaller #Schmarrn zu verbreiten wie im Video ist unfassbar... It is used to show that doing something you want to do with money you have got "is" more expensive (causes you to lose money) than doing something else (more "profitable") you do not want to do. #Madonomics