All known laws of physics have consequences that are computable by a series of approximations on a digital computer. A hypothesis called digital physics states that this is no accident, because the universe itself is computable on a universal Turing machine. This would imply that no computer more powerful than a universal Turing machine can be built physically.

This is something used a lot in computer games, the physics seem quite realistic when that’s what they are trying to do.
Can you not create a computer program/game were the laws of physics don’t exist in our universe and this contradicts the above.

Cymek said:

All known laws of physics have consequences that are computable by a series of approximations on a digital computer. A hypothesis called digital physics states that this is no accident, because the universe itself is computable on a universal Turing machine. This would imply that no computer more powerful than a universal Turing machine can be built physically.

This is something used a lot in computer games, the physics seem quite realistic when that’s what they are trying to do.
Can you not create a computer program/game were the laws of physics don’t exist in our universe and this contradicts the above.

For this Wikipedia page

https://en.wikipedia.org/wiki/Turing_completeness

You can do that just by creating physics models with different physical values for various constants etc. All this can be handled by ordinary algorithms on existing computers.

Cymek said:

All known laws of physics have consequences that are computable by a series of approximations on a digital computer. A hypothesis called digital physics states that this is no accident, because the universe itself is computable on a universal Turing machine. This would imply that no computer more powerful than a universal Turing machine can be built physically.

This is something used a lot in computer games, the physics seem quite realistic when that’s what they are trying to do.
Can you not create a computer program/game were the laws of physics don’t exist in our universe and this contradicts the above.

I don’t see how creating that computer game contradicts the above.

dv said:

Cymek said:

All known laws of physics have consequences that are computable by a series of approximations on a digital computer. A hypothesis called digital physics states that this is no accident, because the universe itself is computable on a universal Turing machine. This would imply that no computer more powerful than a universal Turing machine can be built physically.

This is something used a lot in computer games, the physics seem quite realistic when that’s what they are trying to do.
Can you not create a computer program/game were the laws of physics don’t exist in our universe and this contradicts the above.

I don’t see how creating that computer game contradicts the above.

If it uses physics that can’t exist in our universe then would a Turing machine also be able to do this or would it be limited to physics that do exist in our universe.

I wonder if the Turing test has variations on the intelligence of the person testing it

Cymek said:

dv said:

Cymek said:

All known laws of physics have consequences that are computable by a series of approximations on a digital computer. A hypothesis called digital physics states that this is no accident, because the universe itself is computable on a universal Turing machine. This would imply that no computer more powerful than a universal Turing machine can be built physically.

This is something used a lot in computer games, the physics seem quite realistic when that’s what they are trying to do.
Can you not create a computer program/game were the laws of physics don’t exist in our universe and this contradicts the above.

I don’t see how creating that computer game contradicts the above.

If it uses physics that can’t exist in our universe then would a Turing machine also be able to do this or would it be limited to physics that do exist in our universe.

No. Physicists often muck about with physics models that are unlike our universe.

Cymek said:

I wonder if the Turing test has variations on the intelligence of the person testing it

It appears it does after reading about Turing testing.
Interesting field of study machine intelligence, simulations,etc

Bubblecar said:

Cymek said:

dv said:

I don’t see how creating that computer game contradicts the above.

If it uses physics that can’t exist in our universe then would a Turing machine also be able to do this or would it be limited to physics that do exist in our universe.

No. Physicists often muck about with physics models that are unlike our universe.

Meaning no, it wouldn’t be limited in that way.

Bubblecar said:

Bubblecar said:

Cymek said:

If it uses physics that can’t exist in our universe then would a Turing machine also be able to do this or would it be limited to physics that do exist in our universe.

No. Physicists often muck about with physics models that are unlike our universe.

Meaning no, it wouldn’t be limited in that way.

it’s engineers that canna change the laws of physics… Cap’n

Cymek said:

All known laws of physics have consequences that are computable by a series of approximations on a digital computer. A hypothesis called digital physics states that this is no accident, because the universe itself is computable on a universal Turing machine. This would imply that no computer more powerful than a universal Turing machine can be built physically.

This is something used a lot in computer games, the physics seem quite realistic when that’s what they are trying to do.
Can you not create a computer program/game were the laws of physics don’t exist in our universe and this contradicts the above.

> A hypothesis called digital physics states that this is no accident, because the universe itself is computable on a universal Turing machine.

That ties in with something Unruh said, I think. Something about physics following mathematics, a hypothesis that for all mathematics, no matter how esoteric, there is a real life application. Eg. I once saw a list of real life applications of the theory that 3-D volume is not conserved (Banach-Tarski paradox).