The Beginning:- A Question

[Bjorn]

I'm avoiding looking at any of the replies so that I won't be biased (by anything other than my current knowledge and views) in giving my answer.

For me the bilah starts at the ganja.
Seeing the bilah as a representation of a kayonan or gunungan, it seems logical that the gonjo is the root from where the rest of the blade grows or the base on which it rests.