Good afternoon!
I am learning mostly hands-on, and I would like to create my own models as I learn, not just the ones in the book.
Could you please suggest me what can be modeled: simple and understandable, so that I can show it to my colleagues.
I would like to find an example that would not only be easy to model, but also interesting to test. One in which there would be hidden contradictions, and these contradictions cannot be found without modeling.
Thank you!