# Re: The seven step series

```Questions and comments interspersed below (in bold).

----- Original Message -----
From: Bruno Marchal
Sent: Monday, July 06, 2009 12:14 PM
Subject: Re: The seven step series```
```

On 06 Jul 2009, at 16:12, m.a. wrote (in bold):

Here we met a set of sets.
The set of subsets of a set, can only be, of course, a set of sets.
The set {2, 21, 14} is a set of numbers. The set { { }, {4, 78, 56} } is a set
of sets. It has two elements: the empty set {}, and the set of numbers {4, 78,
56}. Do not confuse a number, like 24, and a set, like {24}, which is a set
having a number has elements. In particular it is the case that  {4, 78, 56}
belongs to { { }, {4, 78, 56} }. Take it easy, and meditate on the following
exercise:

Which of the following are true

{3, 5} included-in {3, 5} True

OK.

{3, 5} belongs-to {3, 5} True

Not OK. The elements of {3, 5} are 3 and 5. {3, 5} is not an *element* of {3,
5}.Why not? They look like elements to me. Please define "elements" as applies
to this example..
Ask in case you are not OK with this, of course.

{3, 5} included-in { {3, 5} } False

OK. Very good.

{3, 5} belongs-to { {3, 5} } True

OK. {3, 5} is even the *only* element of  { {3, 5} }

No exercise today. Just a question, a suggestion, and a plan.

The question is: have you the feeling to learn something?

The suggestion: I think the best way to answer the preceding question
consists in trying to explain what you learn to someone else. It is the best
way to see if you remember and understand the definition. You could try to
explain what you learn to some gentle "victim" in your neighborhood (wife,
friend, child, parent, ...).

I give you a plan, and some more motivation. To get the seventh step in some
proper way, there is a need to understand the mathematical notion of "universal
machine".

For this I need to explain what is a computable function. For this I need to
explain what is a function, and for this I need to explain what is a set, given
that functions can more easily be explained through sets relating sets. Once
you will have a good grip of what is a universal machine, or what is a
universal number, and what really means "universal", we will be able to tackle
the notion of universal dovetailing, and especially the "mathematical universal
dovetailing" (which is really important for the whole approach, and for the
step eight). I am hesitating to work quickly on the notion of function, or to
do some pieces of number theory and geometry to provide examples before.

As I said recently to John, the discovery of the notion universal machine is
one of the most astonishing and gigantic discovery made by the humans, and what
I do is just an exploitation of that discovery. Universes, cells, brains and
computers are example of universal machine, and the notion of universal machine
are a key to understand why eventually, once we say "yes to the doctor", and
believe we can survive "qua computatio", we have to redefine physics as an
invariant for the permutation of all possible observers, and how physics can be
recovered from an invariant among all universal machines point-of-views ...

Feel free to slow me down, or to accelerate me, and to ask any question at
whichever level of details you want. Feel free to ask any question that you

Have a good day, and thanks for your effort and seriousness,

Bruno

PS. It should be obvious for everyone that if there are still questions,
critics, objections, problems, feeling of dizziness, whatever, with the first
six steps of the UDA, please, feel free to ask. And people should not hesitate
to discuss other everything-like subject, I don't want to monopolize the list
of course. But the UDA reasoning really changes the perspective on all possible
TOEs, so I will feel free myself to point on UDA on each discussion where I
find it relevant (of course also).

http://iridia.ulb.ac.be/~marchal/

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