Yea I agree. It all relies on (2) but they do a very poor job explaining what exactly the simulation is. If there is a paper by McNight, it isn't cited and I can't find it. Can't find it on his webpage[0][1] or google scholar.

This is a non-trivial simulation so the details are really important! Shame they are nowhere to be found.

[0]: https://ibi.gmu.edu/faculty-directory/patrick-mcknight/ [1]:https://scholar.google.com/citations?hl=en&user=sH44LC4AAAAJ...