well, we certainly know Hubbard didn't solve it, otherwise he'd be back.It’s an interesting topic, and what I consider to be the key issue can probably be easily understood by ex-Scientologists.
If life comes from matter, then I can accept the logical inference—which is that there is no free will. Just as the billiards on a table bounce around according to the laws of physics, then so do the ideas in our heads bounce around.
If, on the other hand, thought created matter within time in order to have games to play, and we are all still playing those games, then I think free will, within the boundaries of environmental pressures and prior decisions, still makes the most sense.
What could possibly have created the universe? What is life? The materialist determinists have not been able to answer these questions to my satisfaction, and I consider their firm rejection of free will to be an an error stemming from their religious certitude that life is a product of matter.