A model is only as good as its explanations of previous events and accuracy of future events.

What does your model predict and explain better than any other model? Is your model a simpler explanation?

> onion like slices,

So, nested hierarchies? They're pretty useful. But why the onion metaphor? Is there a centre? Do they have thickness? Is there an ultimate end or ultimate beginning? Are there other onions? Is there no cross talk between non-neighboring layers? How deep does your model go?