[oldandtired]

Considering the kinds of experiments that have occurred in the past on electrical stimulation of the brain and memory recall, I would say that the amount of memory being used in the brain exceeds any limit we may well put on it by many, many orders of magnitude.

The major problem is that we are not trained today to recall most of what gets laid down. We are far to dependent of external storage mechanisms, books, videos, etc, that we no longer train ourselves to actually recall and pass on our knowledge.

I am not saying that external memory is bad, just that we should be using all options available to us.

Our understanding of the brain and its mechanisms is very much in the very early stages - we have just scratched the surface.