Why is Vensim PLE free?

Vensim PLE is free for academic use because we want to make it easier for more people to learn system dynamics.  We especially want to lower the barriers of entry for students.  We also hope that people who learn with Vensim PLE will start to use the modeling approach seriously in their work and therefore pay the shareware license fee, or choose to purchase a more advanced version of Vensim.

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