On 02 Jan 2014, at 19:07, Jason Resch wrote:
There are other reasons to prefer it [MWI] besides it's answer to
the measurement problem without magical observers, including:
- Fewer assumptions
Which is nice, because the SWE+collapse is not even consistent, as it
never explains why QM is false on observers.
- Explains more (appearance of collapse, and arguably also the Born
rule (with Gleason's theorem))
- Explains how quantum computers work
- Fully mathematical theory (no fuzziness, or loose definitions)
- No faster-than-light influences
Which is nice, as it is covariant, and makes QM usable in cosmology,
as it *is* actually used today.
- Explains universe at times before there was conscious life to
observe it
- Preserves CPT symmetry, time reversibility, linearity
- Is realist on things other than our observations (here is
"something else" out there, besides what is in our minds)
QM without MWI is QM + ad hoc instrumentalist magic.
You forget one nice point with MWI. It confirms computationalism
(which is the least magical theory of mind).
In fact MWI confirms COMP + NON-solipsism, as it shows the existence
of a first person plural: the contagion of superposition ensures that
the entire population of communicating observers are duplicated/
multiplied, and that gives the first person plural.
The MWI confirms also Einstein's intuition on QM: God does not play
with dice, and there are no spooky actions at a distance.
Bruno
http://iridia.ulb.ac.be/~marchal/
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