“That by 2020 a wearable device will be available that will use voice recognition capability and high-volume storage to monitor and index conversations you have or conversations which occur in your vicinity for later searching as supplemental memory.”

All the tools are so close...wearable computers, voice recognition is growing in its capabilities. Information overload is hitting more and more people who are no longer capable of keeping up. With the advent of a simple AI or even tools like Google's search engine, a supplemental memory is inevitable.