I've always imagined it being a link to other brains or computing devices. The new computing devices become part of who we are, it would give us the advantages

I've always imagined it being a link to other brains or computing devices. The new computing devices become part of who we are, it would give us the advantages of a computer inside our heads. Instant calculations and true photographic memory would be possible. Plus it would eventually allow us to "transfer" our brains, which might be required to live forever. There has been lots of discussion on the requirements for a brain transfer, it would likely have to be gradual, and there is always the debate on if the new you is really you or just a clone.