I wonder if you could come up with a preservation metric tied to time investment or labor. The oral tradition is very labor intensive. How does it compare to

I wonder if you could come up with a preservation metric tied to time investment or labor. The oral tradition is very labor intensive. How does it compare to the labor required to mine, refine, and build computers and hard drives for a storage service like S3 to preserve an equivalent amount of information? Or to chiseling everything into giant stone tablets? Printing and re-printing books?