Ms Casey said to say that...
- Your outie is disappointed that you're advertising a site that is re-hosting Daniel Shiffman (AKA The Coding Train)'s own simulation of the MDR system, that he already made freely available with no ads/tracking.
- Your outie also said that, while Mr Shiffman made his code available on GitHub, caution is advised since it appears no license has been specified in Mr Shiffman's repo - meaning you could very well be potentially breaching copyright by using it elsewhere.
- Finally, your outie wants to thank you for your kind words and wishes you a pleasant day. 🙂