Ventana software support forum

Sterman is an excellent System Dynamics modeller. I've got his Business Dynamics text book, and I find mapping out soft variables isn't really that hard, haha. Use what you think works best for your problem. Certainly, hard variables are easier to map out as there is a lot less uncertainty. Heck, ev...

I was getting a whole bunch of floating point errors when I was mapping out a soft-variable (confidence, success, etc) model, and I didn't discover why till just this week. When you divide something by time, and time is zero, you will get a floating point error. Fix the initial time to a number. Or ...

I'm starting a couple online income streams and was using Vensim to map out what my income would look like over time if and when I completed the projects. Unfortunately, I can only make 100 bucks this year, but those positive feedback loops create an exponential effect, and I'll get that a day in 6 ...