Jupiters Grand Attack and Shaping of our Solar System in Light of Exoplanetary Systems (a seti talk)

One of the problems with his model and its predictions (as he discusses at the end) is that he states close in, tightly packed systems like Gliese 667C or the like, are going to be mutually exclusive of having gas giants in orbits in the outer system.  Yet, we know of several where there are close-in, tightly packed systems with gas giants or giant planets in the outer system, for example, HD 10180, HD 187123 or HD 125612 or the list goes on.  These contradict the predictions  of the Grand Track model based as he lays them out.

Minimally, his model ought to be taking into account these systems.  And should be reworked with the currently known exoplanetary systems in mind.