Ivan, could you explain why you use system dynamics instead of Excel? I understand that Excel helps with parameter estimation for historic data. You could use Excel to run scenarios into the future.
Yes, I sometimes do use Excel for the projections. Sometimes it is easier to compare different future scenarios in Vensim. Thanks for asking. I should make it clearer.
Hello Len, I just saw this now. I could run scenarios into the future with Excel, but there is a slight complication that is unfortunate when you want to show the same parameter in multiple scenarios on the same graph. I will bring this up in future presentations. Thanks for the advice. I hope this helps. Ivan
