a qualitative model including the arguments from an article from Handelsblatt (https://www.handelsblatt.com/finanzen/anlagestrategie/trends/die-naechste-rezession-abschwung-oder-crash-warten-auf-den-grossen-knall/23589494.html?ticket=ST-2259849-76TcgloNt9xQvTFcp2kS-ap6) and some more feel free to edit the model via its collaborative link