Amelie's CO2 Modell 2 (zum Gewinnen eines Fairphones)

während einer Gartenparty stellten ein paar Kinder zwischen 7 und 10 Jahren Fragen zu unserem Sampada Ofen, dem Veganersein, usw. Am Abend rückte ich dann mein Tablet raus und wir haben gemodelt. Amelie hat die Fragen gestellt und alle durften mal Faktoren anlegen. Die Kinder konnten hernach die meisten Zusammenhänge wiedergeben (möglicherweise zum Leidwesen einzelner Elternteile) PS: das Fairphone ginge dann an Amelie

Winning the Fairphone: a collaborative model on the development of house (real estate) prices

This is a collaborative qualitative model on the development of prices for real estate (houses, apartments etc.). While there is already a collaborative model on the development of stock markets ( I would like to gain more insights on house prices as well. Background: while the population is shrinking we still see a boom in the construction of new houses. I thought that this was only because of low interests but experts told me a couple of demographic arguments I wasn't aware of. Let us see how we can cover this topic. So, please join the modeling. PS 1: Maybe we need to quantify different cohorts of our society and run a simulation model on this, but ...»

PM Magazin - Erläuterung Gewichtung von Projekt-Schritten

nur ein Mini-Modell zur Erläuterung eines Artikels im Projektmagazin (Link folgt)

What have Trump, Putin, Erdogan, ISIS, etc. in common?

The question from the model's title is answered by the model as it shows causes to a world wide growing symptom.

Qualitative model on the UN's sustainable development goals (SDG)

Source: This model is just a start. The next step would be to include the targets from the source above. Feel free to insert the model to your (free) iMODELER account to start a more detailed model !!! After that we should continue to use the 4 Know Why Questions in order to exploratively add hard and soft factors that help to explain what could serve as an effective lever to improve the situation in the world. Finally the model could be used to distinguish different regions in the world. Of course, the source already features a promising quantitative model just to do that. Yet, I'd rather like to have a more transparent open source model so in the future it wo ...»

London's Housing Crisis - a collaborative modeling experience

On LinkedIn ( Bob Bollen asks for ways to model London's housing crisis. While some suggestions are rather complicated (some imho outdated) I'd like to suggest to just start with it in a way that not just experts but also stakeholders can read a model and contribute to it. So here is the start of a collaborative model.  Please ask for any further assistance / guidance using the comment functions on

Hausbau Beispiel für Projektmagazin Artikel Teil 1 Kopie

Dieses Modell wurde nur ausschnittsweise erstellt, um einen Artikel im Projektmagazin ( zu dokumentieren. An diesem Hausbau-Modell mag jeder über den kollaborativen Link weiterarbeiten. Ein Link zum Artikel im Projektmagazin folgt.

Erdogan's radicalization of Turkey

This a start of a collaborative model to get a better understanding of the mechanisms behind the latest developments in Turkey. Please join the modeling by clicking the collaborative link and make use of the discussion on as well.

BREXIT and the future of the EU

A small model on some major interconnections surrounding the BREXIT and the EU. Before you have a look at the presenter please try to find the major target within the model :-) And please tell or directly change via collaborative link what you miss or see differently.