Just watch one woman saying how difficult is for her to sustain when she does not have electricity at home and she has go travel long to fetch kerosene oil to light up her lamp at night.
Rather than memories that have to go to a specific address and step and fetch it, they can address databases in memory through similar content methods.
If you need one, you go tap-tap at your keyboard, which sends enormous rolling robots to fetch the right bin and crank it up to the circulation desk, allegedly in less than 5 minutes.