How do you define etymology and what would be acceptable to you?
I define etymology based on its definition presented:
The MERRIAN-WEBSTER:
the history of a linguistic form (such as a word) shown by tracing its development since its earliest recorded occurrence in the language where it is found, by tracing its transmission from one language to another, by analyzing it into its component parts, by identifying its cognates in other languages, or by tracing it and its cognates to a common ancestral form in an ancestral language
https://www.merriam-webster.com/dictionary/etymology
and, then Wikipedia:
Etymology … is the study of the history of words. [1] By extension, the term “the etymology (of a word)” means the origin of the particular word and for place names, there is a specific term, toponymy.
For Greek—with a long written history—etymologists make use of texts, and texts about the language, to gather knowledge about how words were used during earlier periods and when they entered the language. Etymologists also apply the methods of comparative linguistics to reconstruct information about languages that are too old for any direct information to be available.
By analyzing related languages with a technique known as the comparative method, linguists can make inferences about their shared parent language and its vocabulary. In this way, word roots have been found that can be traced all the way back to the origin of, ...
https://en.wikipedia.org/wiki/Etymology
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I have looked at script to see this word used as far back as it has been scripted, and so far it has not been dated that far back in time even in any translations. But when I look at root words that compose the word 'ALKEBULAN' I can accept that Dr. Ben perhaps has formed his findings on root words like
Kebulan
Gebu
Jebus
El-Gebel ...
I see these root words in early script and therefore, I believe Dr. Ben and you, on this basis.