right sorry, i didn't mean to come off sounding like the idea that it's a ratio is unbelievable, but rather, I have a hard time understanding how "points currently obtainable" is defined. (and since you worked on ME2 at Bioware for a little bit, i was hoping i could ask you for a bit of clarification, "mod non-disclosure agreement" :P )
One post I saw somewhere out there on the internet said something like this: whenever you "open" a new area, the game adds all possible paragon/renegade points obtainable in that area to your morality ratio denominator.
However, this doesn't really seem that clear to me -- for example, when I land on Omega the first time, which areas have I "opened", for the purpose of determining points obtainable? You might say, "well obviously, it's wherever you can get morality points from actions/conversations in Afterlife and the shops around it," but the problem is that certain conversations in those areas (and hence, obtainable points) become available only after completing/triggering other game events (e.g. finishing either of Mordin's or Garrus' dossiers triggers the Patriach assignment; completing the mission on Horizon causes the salarian Ish to instantiate the next time you land on Omega), so are the points obtainable in these "later" actions/conversations factored in? Likely not -- so what I'm wondering is, where do you draw the line; or put differently, is it "geographical" boundaries that must be crossed, or is it actually "event" boundaries that must be crossed, to trigger a new incrementation of your morality ratio denominators?
Actually, an even better example is the Normandy, itself. So many conversations/actions take place, there, yet all of those morality points that you could get couldn't possibly be incremented once you step onboard the first time. It's only reasonable for it to be event triggers; but from what (perhaps little) I've read, no one has even offered this kind of criticism to the explanation of how your morality ratio is calculated.
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In other news:
http://blogs.discovermagazine.com/badastronomy/2010/12/13/the-wind-is-no-longer-at-voyagers-back/