Yes, I think the idea behind notebooks like Jupyter came from Mathematica. Many people believe that Mathematica would have been huge if it had been open sourced

Yes, I think the idea behind notebooks like Jupyter came from Mathematica. Many people believe that Mathematica would have been huge if it had been open sourced. Now it's probably too late. For example, you can use many kernels with Jupyter, not only Python, so it's a very flexible interface. I enjoy toy models, either simplified equations or computational models like CA. I even made a toy model for the spread of corona virus, so I can look at the effects of isolation, death rate, etc. on the spread of infection, and to give my students something to play with during isolation: https://lee-phillips.org/corona/ https://lee-phillips.org/corona/ But I don't claim that this is a serious epidemiological model. Like CAs and the like, I'm hoping that it is fun to play with and might, just possibly, lead to some insight or new idea. But then that new hypothesis would have to be studied using a more serious model.