I believe they believe they have a solution however based on what is publicly available I don't believe they are correct.
They are most likely not sure if they are correct
and want to recruit you to their cause (not saying
that's bad or good)...
but if they were confident in their solution, they
would release it.
It is also possible that certain Nxt insiders know that they don't have a solution, and simply want to delay the day of reckoning as long as possible in order to maximize the amount of pre-mine they can convert to bitcoin.
Yeah right. That's why Come from beyond wants to reach out to D&T to explain things and show him some code. Logical conclusion genius.
Of course it is possible. People can decide for themselves how probable it is. For the record, I don't believe Come-from-Beyond "reached out" to D&T in a genuine way based on this logic:
I will share any "secret but open source" code I receive barring an NDA. If they want the code public they can just post it publicly. If they want to allow me to see the code under the condition that I not reveal it that would require an NDA. I don't really see the point in secretly sharing code that can be released publicly, do you?
What is interesting to me is that in the (IMO very unlikely) event that Nxt has technical promise, then as soon as the code is open-source it will be possible to create Nxt-clone using the spin-off mechanism and immediately bootstrap the clone with a more efficient distribution than Nxt-original.