Why do we not know about the mantle?

I must confess, the mantle remains a mysterious aspect in our understanding of cryptocurrency and finance. Could you please elaborate on why we seem to lack knowledge about this particular aspect? It seems to hold significant importance, yet its intricacies remain veiled to many of us. Is it due to a lack of research, or is it simply because the mantle operates in a realm beyond our current comprehension? I'm eager to gain a deeper understanding of this concept and how it fits into the larger puzzle of cryptocurrency and financial markets. Your insights would be greatly appreciated.