Hi Rich, (01)
The ontologies that use 4D are quite commercially focussed, so they don't
tend to advertise the fact. The term "4D Ontology" sounds a bit too sci-fi
for most commercial folks. It seems to work, though it does take a while to
shift your thinking into 4D. Once you've flipped though, there's no going
back. Everything else looks primitive in comparison. (02)
Now I understand what is meant by 3D+1, I think Pat is correct that most
(maybe all) 3D+1 ontologies could be converted to 4D, but they would have to
follow pretty strict criteria for identity if the conversion is to be
automated. I'm not sure the reverse mapping would offer as many
opportunities for automation. (03)
Ian (04)
-----Original Message-----
From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Rich Cooper
Sent: 07 February 2011 20:52
To: '[ontolog-forum] '
Subject: Re: [ontolog-forum] Fw: Presentism etc (05)
Ian and John, (06)
I stand corrected by the weight of your evidence for 4D, though it still
seems implausible as a functional, operational, system. (07)
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. (08)
Thanks for the info,
-Rich (09)
Sincerely,
Rich Cooper
EnglishLogicKernel.com
Rich AT EnglishLogicKernel DOT com
9 4 9 \ 5 2 5 - 5 7 1 2 (010)
-----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 (011)
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. (012)
Pat H., Matthew W., and Chris P. have been promoting a 4D
representation for its computational regularity and simplicity,
not for its philosophical niceties. (013)
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. (014)
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. (015)
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. (016)
John (017)
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