PixyMisa said:
Very well put.
I have a few questions.
What is the number of physical facts needed for creating an arbitrary accurate and precise simulation?
Many. But finite and well-defined. You'd have to define the system being simulated, then we could calculate the upper bound.
How does one define a system of which we do not know all the physical facts yet, such as consciousness.
Assuming we have chosen enough physical facts for creating an arbitrary accurate and precise simulation should we stop searching and/or adding physical facts to our simulation, even if they make no difference to the observed behavior of the simulation?
PixyMisa said:
The whole idea of the Planck scale is that there is a point at which there is simply no more detail. Any finite physical system can be fully described by a finite amount of information.
Yes, certainly in theory, but in practice how do we know we have all the information and have come to a point where there is no more detail required?
For example we have found lots of DNA in cells that appear to serve no purpose (at least we have not found it yet), should we leave these physical facts out of a simulation of a cell?
PixyMisa said:
Well, the DNA is actually, measurably there, and changing the DNA will have an actual, measurable effect, even if it still codes for all the necessary proteins. Depends on what you're trying to do with the simulation.
Not sure I understand you here.
I will try the question this way.
We have DNA which appears to serve no function. i.e. the organism's behavior, as far as we can tell, is not affected by it. If we want to simulate an organism can we leave out the information in the simulation related to its DNA that appears to serve no function?
This has interesting consequences for RD transporter dilemma.
Does it matter that our simulated world may have less physical facts than the world we are simulating, but the same behavior?
PixyMisa said:
Possibly. It would tell us something. For example, if we build an accurate biological simulation but leave out the "junk" DNA, and we end up with the expected behaviours, then we know the "junk" DNA is really junk - to whatever extent the simulation runs. If we observe different behaviours, that would indicate that the "junk" DNA actually has a function.
So I think this answers the previous question, but not the question that I asked.
I will try again.
Is a simulation of an organism which excludes information of the physical organism being simulated but exhibits all the behavior of the organism an arbitrary accurate and precise simulation?
How long do we keep monitoring the behavior of our simulation to make sure we have an arbitrary accurate and precise simulation?
PixyMisa said:
For a Planck scale simulation, you know exactly the scope of the information you need before you even start.
Yes but to practically get all this information and decide which is relevant (see Junk DNA example above), we will need to monitor behavior in our growing model to decide whether new information is necessary or tested information is not.
So I am not sure you have answered the question as to how long do we monitor behavior before deciding whether the information inputted is sufficient to simulate an arbitrary and precise simulation?
For a simulation at a higher level of abstraction or a larger granularity, you do need to check to see if your abstraction is correct. How long that took would depend on the simulation in question.
Lets take a simulation of consciousness as an example then for an answer to the previous question.