X-Message-Number: 18437 From: Date: Tue, 29 Jan 2002 16:12:39 EST Subject: Uploading: dt & time shuffles It's not important, but it's amusing, and I haven't seen it discussed elsewhere, so (in 2 separate messages, of which this is the first, I'll say a bit about a couple of slightly different angles on uploading problems. Delta-t problems: As far as I know, physicists do not regard time as quantized--it has a continuum of possible values in the Schroedinger equations. (Even energy is only quantized in the sense that it is delivered in packets. E.g. the energy of a photon is hf, and f has a continuum of possible values.) Now, a hypothetical digital computer, running a simulation of a person, generates successive sets of numbers, representing the successive quantum states of the person. But it can only do this in increments, which means approximations (in addition to the fuzziness from the uncertainty principle). If the increments (delta-t) are small enough, the delta-t fuzziness will be smaller than the uncertainty fuzziness, but nevertheless the simulation will add fuzziness, hence will not be of highest fidelity, unless delta-t approaches zero, which would make the simulation take forever. Robert Ettinger Cryonics Institute Immortalist Society www.cryonics.org Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=18437