dutch - the whole problem is that the rules contain contradictory wording that could be read either way. ICE has chosen to make the Official Interpretation in the manner that I have indicated above after reviewing and considering ALL of the text of the section, not just cherry picked snippets.
Sorry, but I have to say I think the 'Official' interpretation does more cherry picking, along with some pretty speculative assuming as well. Really, talking about the relative importance of where the paragraph breaks begin and how the bullets are arranged is a little dubious.
The easiest interpretation (and forgive me here for invoking Ockham's razor, but I prefer the easiest interpretation) is that the text you note in blue above means that skill ranks drop to zero at the end of the levelling process. Especially if you are simplifying things in the new editions and doing away with the 'spend points in a list at this level, make your roll next level' idea, then why not simply have all casters spend all their DPs at once? That's what we always did. The idea of letting players spend some of their DPs, make a roll and THEN spend more DPs is what makes things a real mess, IMHO. I don't know of any other skill that allows this.
Would you allow characters to buy some boxes in Body Development, see if they like the rolls they get, and then decide to spend more? No, of course not, because it contradicts the basic idea behind development points and levelling. I don't see why spell lists should be different than all other skills in that regard.
It would be far better just tell them that for spell lists, as for every other skill in the game, you have to decide where to put your DPs and that that choice is final. Then the players have the choice they've always had: spend 20 for a first list and more for a chance at another, or spend less than 20 and take their chances on one list. Only one spell gain roll can be made and the plain language of the book is not contradicted. Problem solved.
Dutch has already pointed out the plain language of the basic rule: "In order to attempt to gain two spell lists in one level of development, the first list must still be developed to 20 skill ranks (i.e. the primary stat bonus cannot be applied). However, the bonus can be applied to the roll for the second list (at
least one skill rank is required)."
I'm just going to stick with that.
This whole topic was done to death in that other thread that I have been quoting from. Instead of repeating the same arguments over and over, I would recommend going and reading that other thread.
Can you please provide a link to that whole thread? The link you provided above actually just directs you back to this thread. I would like to read the entire discussion, not some 'cherry picked' parts of it.
I would like to see the part from the preceeding quote that was 'snipped for brevity'. Can you please include that Rasyr? Thanks.