short memories and empty memories

The Shadow Wall touches upon our sense of memory. Our memories are fleeting and they seem to fade away. At some point they go completely. At what point will you forget everything you did today? Can you remember everything you did this morning?

The machine memory for the Shadow Wall is completely wiped every twenty cycles. The video clip above shows a complete set of memories with the older ones fading. The clip below shows an empty set of memories - a complete void. Will your memories of today be reduced to this in the future?