Okay. Are all ideas equally simple? Is the idea of an elephant the same as the idea of a line from the perspective of complexity?
The graph presented in the OP consists of nodes and edges. These are mathematical ideas. Do you agree that a network of nodes and edges is a simple idea?
Guess #3: "The Big Bang" (i.e. planck-radius universe). — 180 Proof
Your are proposing a self propagating construction in the Big Bang? Some process that caused reality to come into existence from a formless void?
I had in mind something like an existing pile of bricks that is constructed into a shape. You appear to be taking one step further back and proposing the construction of the bricks themselves from nothingness.
That is, I have taken the universe as a given and considered the simplest possible mechanism for the continuation of an already existing system.
You have prompted me to reconsider whether the question of genesis is amenable to some equivalent approach.
Infinite regression
A naive approach to first cause leads to infinite regression with each cause needing some prior cause.
Taking the universe as a given sidesteps the problem of genesis but doesn't really solve it. An eternal (has always existed, will always exist) universe has its own conceptual problems, not least of which is the emergence of entropy.
Anthropic Principles
I am tempted by the Strong Anthropic Principle in which the universe exists in order for us to observe it.
What is the point of a universe that isn't aware of its own existence?
However, I can't immediately see a way to make a testable hypothesis out of this.
Testable
With Simplest possible universes I can build teeny tiny complex systems (universes) and compare their characteristics with our observed universe.
The proposition that our universe can be described by iteration of a direct graph is testable.
The limitation is that I have to exist in order to make those teeny tiny universes and compare them to our observed universe.
I have to take my existence (and the existence of the universe) as a given.
I'm pretty sure this is a hard limitation. But your comments have prompted me to have another consider - and there is a little tickle in my mind that is suggesting such consideration is worth some effort.
The idea of connections making up everything (like some sort of code that determines what particles are where) is attractive to me because every particle with mass must be made up of others unless mass is a trait like location and could be coded for by these connections. — Igitur
I'm glad I could tickle your brain bone a little. I'm not disagreeing with you - more refining a point I think is relevant:
As noted in the OP, I think that this is the mechanism of our observed universe.
Relevance
We have a direct graph with nodes and edges and Change A.
The closest thing to a dimension in this directed graph is an edge.
Space, time, mass, charge and consciousness are all emergent features of changing nodes and edges (according to me).
Edge as the fundamental unit of the universe
Instead of particles being the fundamental unit, we have the space between as the fundamental unit.
If an interaction is "one rearrangement of edges between nodes" we suddenly find that we don't have to think about what happens between interactions.
There is no space in which particles move. Like frames of a film, a series of interactions can give the impression of continuous movement in space.
Note: In real, genuine, actual physics we observe interactions. We never observe anything between interactions. The notion of particles travelling through space between interactions is entirely theoretical.
Our conception of space is based on trying to understand the sequence of interactions that we observe.
There are explanations of sequences of interactions that exhibit complex behaviour without the need for dimensions, mass, charge, spin or momentum as a priori assumptions.
We don't need to assume space time in order to observe the sequence of interactions that we see.
Having no parts is not 'Nothing'. The Fundamental can't have parts because those parts world be more fundamental; thus, the fundamental consists of only itself; — PoeticUniverse
It looks like we are in agreement here. Yes - a distinctive property of the very simplest thing is that it is indivisible. If it were divisible into component parts it would clearly not be 'simplest'.
I'm a little nervous about conflating 'fundamental' with 'simplest' insofar as an electron is described as a fundamental particle in Quantum Mechanics but is not simplest in regards to being composed of multiple, distinct properties.
It looks like your point regarding the persistence of fields vs electrons is making the same point?
Further discussion of simplest/fundamental
An ocean wave is emergent behaviour of large numbers of 'particles'.
If we cut a human up into smaller and smaller pieces looking for the fundamental unit of humanness we find ourselves with a mess of giblets and rather less essential humanity. Likewise for the fundamental waveness of a wave.
As such I can sort of, vaguely, see an argument that a wave is indivisible.
But, as a matter of practicality, we can divide a wave into component parts. A wave is divisible and hence not fundamental/simplest.
A mathematical point is, I would argue, indivisible. It is not composed of subunits. However, I think that a mathematical point is a complicated way of saying 'nothing'. Having a pile of mathematical points is functionally equivalent to having a pile of nothing.
A set is a container. The only inherent property of a set is that it contains. In principle, a set is independent of physics and not subject to reduction to physical fundamentals. A set is a candidate for simplest/indivisible.
An edge within a directed graph is a link. As with sets, the edges within a graph are supposed to be independent of specific physics.
Agree/Disagree
Having no parts is not 'Nothing'. The Fundamental can't have parts because those parts world be more fundamental; thus, the fundamental consists of only itself; it does not get made and it cannot break, so there is no sub-dividing it. For example, a wave would be continuous and have no parts. Waves are also ubiquitous in physical nature. The Fundamental has to be the simplest, by the necessity shown above. We can also see this trend as we look more and more 'downward' — PoeticUniverse
I agree wholeheartedly.
An electron is temporary, as is all else but the permanent quantum fields. An electron can be annihilated by a positron, but electrons can persist awhile in the right emvironment. — PoeticUniverse
The Real Number line is a typical representation of the mathematical concept of field. This field can be divided into the individual real numbers. This does not seem to fit our definition of simplest.
Just for funsies. Are you thinking of a human building a physical universe from raw materials, or a god creating a dynamic world from scratch? — Gnomon
As noted earlier, somewhere, I find myself constrained such that I require my own existence as a pre-requisite for... pretty much everything. At the moment I have no conception of how I would create myself and a universe out of sheer void. I have to take the existence of a universe as a given and work from there.
But concrete is loose sand bound together by a mineral matrix, the binder. — Gnomon
Well... funnily enough. Given the binder, it is sufficient by itself.
The little revolution I'm trying to foster is regarding the necessity of the bits between structure.
A network of relationships doesn't require us to define what the relationships are binding. The structure of the relationships is enough by itself.
Pursuit of knowledge: scenario 1
We wish to understand, say, consciousness. We want to drill down to the very core of what consciousness is to arrive at the heart of the conception.
As with when I was chopping up people earlier in this thread, we find that chopping up concepts into their component pieces tends to leave us with a messy pile and no sign of the original concept.
The definition of madness is doing the same thing over and over again and expecting different results.
Going all Sweeney Todd on concepts to find their essence is just murder. Philosophy finds itself chasing its own tail because a reductive approach to knowledge just lead to corpses.
Scenario 2
Concepts are defined by what they are not.
The significance of the Integer 1 is its distinction from the Integer 2 (and 3, 4, apple, infinity,...)
To fully understand consciousness, we need to fully understand everything that is not consciousness.
Everything is a single connected whole and each piece is an aspect of the whole.
Yes - hippy dippy "everything is one" except seriously.
Your experiences are part of your existence. If you try to consider your existence in isolation from your experiences you are liable to find you don't exist anymore.
In order to argue, you first need to exist. Every argument you engage in requires your existence. If you try to divorce the process of argument from your existence your argument ceases to exist.
That is circular
"If each idea is defined by every other idea, then reasoning is circular; there is no starting point."
Yes.
We are living inside a closed system. When you point to something it is one piece of universe pointing at another piece of universe.
When you describe something you are using one piece of universe to relay information about another piece of universe. Your concepts of the universe all derive from the universe.
Physics is literally describing the behaviour of the universe in terms of the behaviour of the universe.
Not Nihilism
Understanding the relationships between things is knowledge.
The relationship between the integers 1 and 2
is our understanding of those integers.
Context matters
Everyone knows that context matters.
Dial that up to 11 and keep going.
Context is everything. Without context there is nothing.
This isn't new territory.
Probably the bit (or qbit), right? 1 or 0, nothing more complex. Presumably, you can say everything about any of the other candidates (except perhaps ideas) with bits. — Count Timothy von Icarus
Reasonable answer - but I'm going to disagree.
In order to build a computer, the bits have to have specific relationships. There has to be structure between individual bits.
So while bits are notionally simple, by the time you can build anything with them you have stealth included some assumed structure. The bits+structure is less than trivial (simplest).
There is still the potential for a very simple system - but without an explicit statement of the structure, I'm inclined to think you are hiding more complexity than you realise within your implicit assumptions.
If I may impart my own spin to your thoughts...
I think your scepticism is/was well placed.
Physics faces the same problem as philosophers:
What caused the first cause.
Physics as a statement of observations is fine: "If we do x we observe y".
Physics as an explanation is less founded than Lord of The Rings by J.R.R. Tolkien. At least Tolkien understood what an allegory was.
Saying the Higgs boson did it isn't an explanation when you don't understand why the Higgs boson does it. As explanations go it is no different to saying God did it. It doesn't explain. It is a null statement.
It isn't clear to me that individual physicists understand that physics cannot explain observation - only describe it. I fear the myth of physics as explanation is near universal.
"This is what we observe" is in no way equivalent to "this is why we observe...."