Well, a scientist follows processes in a lab to prove something. When the repetition of the same steps and processes leads to the same result, this is considered a proof.

The process of initiation and the layers of the conscience as the perception expands, is the same thing. It has been "done" by/it has taken place within millions of individuals in the world during humanity's existence. The path, the methods, the ways are not the same for all, but they all recognise the same results when each of them reaches a new layer. So, it is proven!

Scientific ways can be taught, but this cannot be taught, because --as you already know-- it has to be realized from within, it has to be realized through inner experience while the process is running.

It also has to do with the specific things that each individual has to overcome. The ultimate Purpose is one, but the purpose of every life-cycle is different, and not all of us are at the same spot when it comes to that.

Let's not move further and say that the results and conclusions of the "non-scientific" processes are the same from back in antiquity until now! We understand that from the symbolic signs individuals that expanded their perception and reached wider layers of conscience have left in their writings (hidden in public view).

On the other hand, Science very often discovers conclusions of its past that are not "correct" anymore. But, I will leave it here... :-p

Great post, Marcus!