[ExI] teachers

[BillK]

On Wed, 30 Aug 2023 at 10:00, efc--- via extropy-chat
<extropy-chat at lists.extropy.org> wrote:
>
> Hello Adrian and Jason,
>
> I don't think that anyone here actually believes the universe is
> conspiring against anyone, but my interpretation is that it is just a way
> to convey meaning.
> Perhaps we could find a less loaded term?
>
> Best regards, Daniel
>_______________________________________________


Perhaps a review might help the discussion.
I asked an AI -
How do different interpretations of quantum mechanics address the
measurement problem?

Reply -
Different interpretations of quantum mechanics address the measurement
problem in various ways. The measurement problem refers to the
fundamental issue of how a quantum system transitions from a
superposition of multiple states to a single definite state when it is
measured or observed.

1. Copenhagen Interpretation: The Copenhagen interpretation, developed
by Niels Bohr and Werner Heisenberg, is one of the most well-known
interpretations of quantum mechanics. According to this
interpretation, the act of measurement causes the wavefunction to
collapse into one of the possible eigenstates of the observable being
measured. The collapse is seen as a random process, and the
probabilities of different outcomes are given by the Born rule.
However, the Copenhagen interpretation does not provide a clear
explanation for why and how the collapse occurs.

2. Many-Worlds Interpretation: Proposed by Hugh Everett III in 1957,
the Many-Worlds interpretation suggests that when a measurement is
made, the universe splits into multiple branches, each corresponding
to a different outcome of the measurement. In this interpretation, all
possible outcomes exist simultaneously in separate branches of
reality. This means that there is no actual collapse of the
wavefunction; rather, it continues to evolve unitarily without any
discontinuity. Each branch represents a different possibility, and all
possibilities are realized in different parallel universes.

3. Pilot-Wave Theory (De Broglie-Bohm Theory): The pilot-wave theory,
also known as the de Broglie-Bohm theory or Bohmian mechanics, was
developed by Louis de Broglie and David Bohm in the 1950s. According
to this interpretation, particles have both a particle-like aspect and
a wave-like aspect. The wavefunction guides the motion of particles
through a guiding equation called the pilot wave equation. In this
view, measurements are not fundamentally different from other
interactions between particles; they simply reveal pre-existing
properties that were determined by initial conditions and hidden
variables.

4. Objective Collapse Theories: Objective collapse theories propose
that the wavefunction collapses spontaneously due to some physical
process. These theories introduce non-linear and stochastic
modifications to the Schrödinger equation to account for the collapse.
Examples of objective collapse theories include the GRW theory
(Ghirardi-Rimini-Weber) and the Penrose interpretation, which suggests
that quantum gravity plays a role in the collapse.

5. Quantum Bayesianism (QBism): QBism, developed by Christopher Fuchs
and Rüdiger Schack, takes a subjective view of quantum mechanics. It
treats probabilities as personal degrees of belief rather than
objective properties of the physical world. According to QBism,
measurement outcomes are not determined by an external reality but are
instead reflections of an agent's personal beliefs and experiences.

6. Information-Theoretic Interpretations: Some interpretations, such
as the information-theoretic interpretations, focus on the role of
information in quantum mechanics. These interpretations suggest that
quantum states represent information about possible measurement
outcomes, and measurements update our knowledge or information about
the system rather than causing a collapse of the wavefunction.

It is important to note that these interpretations are not mutually
exclusive, and there are many other interpretations of quantum
mechanics beyond those mentioned above. Each interpretation offers its
own perspective on how to address the measurement problem, but none
have been universally accepted or proven to be definitively correct.
----------------------------

This points out that quantum mechanics is still undergoing much
discussion and has not been resolved yet.
It seems best to remain 'agnostic' in the face of so many different
interpretations.
It will be a real breakthrough for humanity when quantum mechanics and
the true nature of reality is understood.


BillK