Ian and John, (01)
To be more specific, is there a way to put every 3D object into a class of
instances of that object that have associated start and stop bounds? (02)
Type T4D=record
A3DObject : T3D;
LifeStarts : TDateTime;
LifeEnds : TDateTime;
End; (03)
Generically, the slot fillers <LifeStarts> and <LifeStops> could be
constants at all times, or could be evaluatable expressions to get
calculated at execution, or they could be data known at the
<System.LifeStarts> time from the very beginning of linear operation until
<System.LifeEnds> time, whether preplanned, or purposeful, or just a sensor
derived outline of the simulated reality sensed as constructed by the
system. (04)
Is it feasible, desireable, useful to do <4D/3D+1> transformations that way
in an operational system? (05)
-Rich (06)
Sincerely,
Rich Cooper
EnglishLogicKernel.com
Rich AT EnglishLogicKernel DOT com
9 4 9 \ 5 2 5 - 5 7 1 2 (07)
-----Original Message-----
From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Rich Cooper
Sent: Monday, February 07, 2011 12:52 PM
To: '[ontolog-forum] '
Subject: Re: [ontolog-forum] Fw: Presentism etc (08)
Ian and John, (09)
I stand corrected by the weight of your evidence for 4D, though it still
seems implausible as a functional, operational, system. (010)
Could you make a case that the 4D representation is somehow a dual of the
3D+1, and explain how to map from one representation to the other and back?
Since there is more interest in 4D than I realized, there should be a way to
integrate the two representations for human viewers. (011)
Thanks for the info,
-Rich (012)
Sincerely,
Rich Cooper
EnglishLogicKernel.com
Rich AT EnglishLogicKernel DOT com
9 4 9 \ 5 2 5 - 5 7 1 2 (013)
-----Original Message-----
From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of John F. Sowa
Sent: Monday, February 07, 2011 12:30 PM
To: ontolog-forum@xxxxxxxxxxxxxxxx
Subject: Re: [ontolog-forum] Fw: Presentism etc (014)
On 2/7/2011 3:09 PM, Rich Cooper wrote:
> We can have our 4D cake, and eat it also in 3D+1 practice, with a few
> transformation calculations thrown in for the philosophers. (015)
Pat H., Matthew W., and Chris P. have been promoting a 4D
representation for its computational regularity and simplicity,
not for its philosophical niceties. (016)
Alfred North Whitehead was a mathematician, who remarked that the
first time he ever entered a classroom on philosophy was when he
retired in the UK and joined the philosophy department at Harvard. (017)
I like a 4D representation for the same reasons as the above,
*and* because it is compatible with Whitehead's ontology --
which is one of the few that is capable of bridging the gap
between science (at the level of relativity and quantum mechanics)
and ordinary human thought and language. (018)
But to do the mapping to ordinary language, it's important
to be flexible, because people frequently move from one
way of talking to another, depending on the context and
point of view. That is why I like to have a general 4D
ontology as a foundation -- it has the simplest mappings
to and from a wider variety of other representations. (019)
John (020)
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