Mysterious passage in LOO

[ada]

To me, this passage in the Law of One is the most mysterious:

16.27 ▶ Questioner: Can you tell me what percentage of those are third, fourth, fifth, sixth density, etc.? Roughly, very roughly.
Ra: I am Ra. A percentage seventeen for first density, a percentage twenty for second density, a percentage twenty-seven for third density, a percentage sixteen for fourth density, a percentage six for fifth density. The other information must be withheld. The free will of your future is not making this available. We shall speak on one item. There is a fairly large percentage, approximately thirty-five percent of the intelligent planets, which do not fit in the percentiles. These mysteries are of sixth and seventh density and are not available for our speaking.

The first highlighted part, (which is more answerable than the second): what could Ra mean by that our free will of the future is not making the information for 6th and 7th density percentages available?

And then, even more puzzling, 35% of intelligent planets (???) do not fit the above percentages and can’t even be spoken on.

I think it's a mystery to them as well so they'd rather not share their speculations and uncertainties to not confuse us more. This is what feels logical to me at least.