# Dictionary of Arguments

Philosophical and Scientific Issues in Dispute

[german]

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Entry
Reference
Turing-Machine Genz II 192
Turing machine/Genz: e.g. instructions that correspond to a certain position can only be: Prints 0
Prints 1
Move the tape one square to the right Move the tape one square to the left
If there is a 1 in the square, go to statement i
If there is a 0 in this square, go to the statement i
Stop
And that is all there is to it.
---
II 193
Logic/Mathematics/Physics/Genz: if the laws of physics were different, it might be impossible to build a Turing machine. N.B.: it might be impossible to calculate the sum of two numbers!
Proof/Genz: is therefore dependent on natural laws.
---
II 195
Initial conditions/Initial states/nature/Genz: in nature there are countless initial states. But a training machine could not list them all, because it could not represent them all differently. ---
II 195
Initial conditions/initial states/nature/Genz: in nature there are countless initial states. But a Turing machine could not list them all, because it could not represent them all differently. ---
II 225
Holding Problem/Non-Hold-Theorem/Genz: Could it be that a future physics (other than ours) allows to do infinite calculation steps in finite time? Turing machine/Genz: a possible world in which more is possible than the logic allows could not be simulated by a Turing machine.
Genz: Thesis: I do not see that it has to be the case that in the updated world every sequence has to be simulated by a Turing machine.
David DeutschVsGenz: (The Fabric of Reality): assumes that everything in the actual world can be simulated by a Turing machine. From this he deduces that the universe collapses, because an infinitely growing universe cannot be simulated by a Turing machine.
GenzVsDeutsch: reversed: the answer to the question of the ultimate fate of the universe, based on physical facts, will also determine whether this fate can be simulated by a Turing machine.

Gz I
H. Genz
Gedankenexperimente Weinheim 1999

Gz II
Henning Genz
Wie die Naturgesetze Wirklichkeit schaffen. Über Physik und Realität München 2002