Many engineers, including me, think that some time around
2050, we will be able to make very high quality links between the brains and
machines. To such an extent that it will thereafter be possible (albeit
expensive for some years) to arrange that most of your mind – your thinking,
memories, even sensations and emotions, could reside mainly in the machine
world. Some (perhaps some memories that are rarely remembered for example) may
not be suited to such external accessibility, but the majority should be.