Hi Sriram,

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On 23 Jun 2010, at 05:12, Sriram wrote:

Can any one tell the basics of TOE? Because i'm very strange to this with lots of interest.

`The word TOE is for 'Theory of Everything'. It comes from physics, and`

`the idea is that reality are governed by forces, and nothing else.`

`Physicists have succeeded in unifying all forces of nature, except`

`gravitation, and the search of a TOE consists for them mainly to marry`

`quantum mechanics and gravitation (general relativity theory).`

`Tegmark, referred by Kevin, digs a bit more closely on the very nature`

`of reality, and seems to be open to the idea that reality is`

`fundamentally mathematical.`

`But virtually none among the physicists are aware of the mind body`

`problem. Most use implicitly both computationalism and the brain-mind`

`identity thesis and are not aware of my (oldest) work showing that`

`computationalism is incompatible with the identity thesis, and`

`eventually makes obligatory that reality is mathematical, even just`

`arithmetical, but also that the link between mind and body is far more`

`complex than usually people think.`

`So, TOE has a larger signification: unifying not just all the forces,`

`but also physical knowledge and consciousness/mind.`

`Here, when you postulate computationalism (roughly speaking: we are`

`digitalisable machine), it has been showed that eventually the whole`

`of physics has to be retrieved from the relation between numbers or`

`finite combinatorial structures. The emerging picture is that the TOE`

`appears to be elementary arithmetic (a bit like Pythagorus believed).`

`From elementary arithmetic, you can extract the logic of self-`

`reference of the (ideally correct) machines (a mathematical notion`

`making sense through Church Thesis), and from this you can study the`

`possible accessible realities, accessible by machines, and this`

`provides the constraints to isolate the physical laws.`

`The problem is that you need to be familiar with mathematical logic,`

`which is virtually unknown by physicists. The advantage (of taking`

`computationalism seriously, and thus machine self-reference) is that`

`we don't need to take all mathematical structures (a notion which has`

`no real mathematical sense). Another advantage is that you will`

`extract not only the quanta, but also the qualia (incommunicable truth`

`in any 3-person ways), thanks to the gap that all (ideally correct`

`universal) machines can discover when looking inward.`

`Morality: the TOE is already in your head and you can find it by`

`introspection, and if you are lazy, you can program a computer to do`

`just that and just listen to him (and to its silence, also). This`

`leads to "well known" modal logic describing abstractly such`

`introspective discourses.`

`This sum up my own work(*) and discussions we have on this list since`

`years. The problem: mathematical logic is not well known, and often`

`misunderstood, and since Penrose's books, which illustrates the gap`

`between physics and logics, physicists seems to be a bit stuck or shy`

`on logic. Philosophy of mind, and the subtlety of the mind-body`

`problem is rather not well appreciated too, by the quite common`

`Aristotelian scientists. To sum up again: if we are digitalizable`

`machine, then the TOE is just arithmetic, at the ontological level. It`

`is enough to explain the richer internal epistemologies and how the`

`couplings consciousness/realities emerge from arithmetic and from the`

`modal internal machines/numbers points of view. In that case the`

`fundamental science is no more physics, but machine or number's`

`psychology or, more accurately, number's theology. The term "theology"`

`is more accurate because it can be shown that computationalism relies`

`on an act of faith, and we have the important splitting between the`

`provable truth and the non provable truth, when self-reference is at`

`play, which happens when you expect the TOE to unify your first person`

`(unsharable) experience with your third person plural (sharable)`

`experiments.`

Bruno

`(*) see for example: http://iridia.ulb.ac.be/~marchal/publications/SANE2004MARCHALAbstract.html`

`(and references therein).`

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