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- From: firth@sei.cmu.edu (Robert Firth)
- Newsgroups: sci.physics
- Subject: Re: New Physics,Healing & Paranormal 2 "White Paper"
- Message-ID: <1993Jan27.080659.11198@sei.cmu.edu>
- Date: 27 Jan 93 13:06:59 GMT
- Article-I.D.: sei.1993Jan27.080659.11198
- References: <C1H5D6.6Jr@well.sf.ca.us>
- Sender: netnews@sei.cmu.edu (Netnews)
- Organization: Software Engineering Institute
- Lines: 50
-
- In article <C1H5D6.6Jr@well.sf.ca.us> sarfatti@well.sf.ca.us (Jack Sarfatti) writes:
-
- >Future "final causes" or purposive "teleological" karmic
- >influences also co-determine the intermediate behavior of the particle from
- >its preparation to its detection.
-
- Nope. Neither teleology nor karma involves causes in the future of
- their effects. Examples: when you stop at a MacDonalds for lunch,
- that's "teleology" - the reason for the present action is to be
- found in the future. But it's still compatible with asymmetric
- causality. Likewise, if you are born a slave, it's because in a
- past existence you were a bad master (or some such) - again only
- forwards causality is operating.
-
- Final causes are also a problem. In classical mechanics, the entire
- behaviour of a system can be deduced from its final configuration, ie
- the equations allow you freely both to predict and to retrodict. But
- that carries no implications about causality, since it is a result
- compatible with asymmetric causality in either time direction.
-
-
- A better view, in my opinion, is to throw out the d/dt stuff altogether,
- and use integral equations and optimisation principles. As another
- example, many problems in optics are readily solved using Heron's
- brachistochrone principle, which can be viewed indifferently as involving
- forwards causality, backwards causality, or entelechy. This should
- convince you that "causality" is in the interpretation, not the physics.
-
- >1. Given a set of indistinguishable alternative histories, add their arrows
- >and then "take the square" to compute the probability of that
- >indistinguishable set.
-
- Again, that's the math, but the idea that the states of a superposition
- represent "alternative histories" takes some swallowing. Example: a
- photon that has just come through an H filter is in a pure state of
- horizontal polarisation. Change the basis set, and presto! - it is
- in a superposition of states of left and right circular polarisation.
- One history or two? The question doesn't apply - we're talking coordinate
- systems, not real entities.
-
- >Brian
- >Josephson, a Nobel Prize Laureate in physics at Cambridge University thinks
- >that complex living systems, which unlike inorganic matter are not in
- >thermal equilibrium, break the unitarity barrier of standard quantum
- >mechanics by some new principle not yet understood.
-
- Huh? The universe is full of examples of inorganic matter not in thermal
- equilibrium. Stars, for instance. Indeed, all known life is parasitic
- upon existing inorganic energy gradients - life eats negative entropy,
- to use the pop phrasing.
-