Rationalizing a Firefly - Serenity type setting

[David Johnston2]

Originally Posted by ak_aramis

[Given that they've found strong evidence for inner system gas giants in positions where "there can't be enough mass" for them to have formed there, again, your denial of its possibility lacks credibility.

That has nothing to do with my objection to the idea. My objection to the idea is that you can't fit enough planets into the habitable zone of a system that one of them can disappear and not be noticed.