> with the idea that you can fill in the vowels according to the structure.

Plus you can then claim that almost any word in virtually any language is *obviously descended from the ancient Semitic script meaning 'to worship the left nipple of a one-legged camel', or if not that then almost certainly from the curiously similar form meaning 'a small grain pit once used for fermenting a sort of proto-beer made from rancid goat milk', or if not that then quite *definitely from the word meaning 'he who is the greatest of the tribe with shiny hair' (which in the Demotic Greek was tranlated as 'angel')...

ah, where would modern etymologists be without that ancient vowel disorder? ;0