Re: Uploaded memories

Robert J. Bradbury (
Wed, 8 Dec 1999 11:46:27 -0800 (PST)

On Wed, 8 Dec 1999, Kate Riley wrote:

> > I commented on having 10^16 of me...
> I'm confused. Why 10^16? (Feel free to reply to this off-list if it has
> already been discussed on-list)

No, I'm always number-dropping on the list...

If we assume 10^26 "operating" minds / 10^10 people (allowing for some growth in human population before we have uploads), that gives you 10^16 "running" copies. Since memory capacity (particularly on the really long photon loops) seems greater than "operating" capacity (limited by the energy output of the sun unless star-lifting is employed), I suspect you have some even greater number of backup copies that are inactive. That allows you to easily tolerate those bad-hair days when an unobserved nanoprobe comes screaming through your MBrain cluster depositing a significant fraction of its kinetic energy (at even low speeds like 0.1 c thats a lot of kinetic energy) in the midst of your computronium.

Hmmmm... Perhaps thats yet another reason interstellar nanoprobe colonization doesn't occur -- a shotgun blast of high velocity nanoprobes through an MBrain makes quite a mess. It doesn't really damage them, but when they have to restore 10^12 "running" copies from the backup storage, it gets them *really* pissed.

They are going to want to know who sent out those nanoprobes without looking where they were shooting.

> I imagine that you'd want to keep copies of yourself at various stages, so
> that if you made serious mistakes, you could reboot yourself to a previous
> "pristine" time, as well as keeping a copy (copies?) of yourself at the
> present time.

Yep. Gets dicey though in determining who gets to decide what is a "mistake" that you should erase...

> Even so, 10^16 seems a tad excessive. Would these copies be
> dormant caches of data, or co-operating identities?
Could be "individuals" as we know them or a hive/borg-mind. I suspect there are nested heirarchies of mind-units that have different thought hold times (concentration times?) or perhaps as Ander's suggests, different memory accuracies and retention strengths.