That you continue to fail to understand how that does not accomplish the task of finding the information you are seeking is frustrating. Rather than the absurd pretense that taking someone from a culture of literary supremacy and asking them to complete tasks suited for a participant in an oral culture is representative of the success of oral information preservation, why don't we just go to the cultures that still practice traditional oral information keeping techniques? Because when we do, we find that they produce near perfect preservation of more information than the plain written word, they maintain the repetition of sound as well as content.I would just love to see oral "tradition" put to a field study test. Lets say from 2 people to thousands of people. Just only 10 to 20 years too, with a preset collection of inital information relying only on people's various recollection and retelling skills.
If you had merely taken a moment to click the provided link, you would have seen that we already know how well the techniques work.
"The Vedic texts were orally composed and transmitted, without the use of script, in an unbroken line of transmission from teacher to student that was formalized early on. This ensured an impeccable textual transmission superior to the classical texts of other cultures; it is, in fact, something like a tape-recording... Not just the actual words, but even the long-lost musical (tonal) accent (as in old Greek or in Japanese) has been preserved up to the present."
M Witzel, "Vedas and Upaniṣads", in Flood, Gavin, ed. (2003), The Blackwell Companion to Hinduism, Blackwell Publishing Ltd., ISBN 1-4051-3251-5, pages 68-71.