Update 30_Interactive_Physarum.md

edition_019/30_Interactive_Physarum.md

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 You may have seen Slim Mold simulations before, but have you seen many *interactive* slime mold simulations?
-"[Interactive physarum](https://github.com/Bleuje/interactive-physarum)" by user Bleuje (Etienne Jacob) on github is an interactive exploration of the parameter space leading to slime-mold-like patterns.
-Go visit Bleuje's project to see beautiful screenshots and run the simulation, or watch the demo video [here](https://www.youtube.com/watch?v=4hLtjlaVzsk).
+"[Interactive physarum](https://github.com/Bleuje/interactive-physarum)" by user Bleuje (Etienne Jacob) on github is an interactive exploration of the parameter space leading to slime-mold-like patterns. This work is based on the work of [Sage Jenson](http://cargocollective.com/sagejenson/physarum).
+Go visit Etienne Jacob's project to see beautiful screenshots and run the simulation, or watch the demo video [here](https://www.youtube.com/watch?v=4hLtjlaVzsk).
 In fact, go have a look at [the entire channel](https://www.youtube.com/@bleuje), you won't regret it!
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+![Screenshot showing a physarum pattern from the simulation](images/phys.png)
+Image credit: Etienne Jacob
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