On 4/20/2015 10:29 PM, Alamin C wrote:
Present- is now
Past- was then
Future- will be
Each has it's own characteristics, that are associated with action. My question is,
about this third option of the present. In experiencing it or being conscious of it we
loss it. So does it actually exist? Does the present actually exist, and if so when does
it become neither the past of the future?
I happen to be reading this paper:
/Physics in the Real Universe: Time and Spacetime//
//George F R Ellis//
//
// The Block Universe idea, representing spacetime as a fixed whole, suggests the flow
of time is an illusion: the entire universe just is, with no special meaning attached to
the present time. This view is however based on time-reversible microphysical laws and
does not represent macro-physical behaviour and the development of emergent complex
systems, including life, which do indeed exist in the real universe. When these are taken
into account, the unchanging block universe view of spacetime is best replaced by an
evolving block universe which extends as time evolves, with the potential of the future
continually becoming the certainty of the past. However this time evolution is not related
to any preferred surfaces in spacetime; rather it is associated with the evolution of
proper time along families of world lines //
//
//arXiv:gr-qc/0605049v5 /
Which is a good exposition of the evolving block picture and why it's a better metaphysics
than the block universe.
Brent
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