Is the Brain a Turing Machine?

1
Is the Braina Turing Machine?

• -Based on John R Searles Is the Brain a
  Digital Computer?

2
What is Computation?

• Computation is defined syntactically in terms of
  symbol manipulation.
• syntax and symbols are not defined in terms of
  physics though symbol tokens are always physical
  tokens.
• computation is not discovered in the physics, it
  is assigned to it.
• Syntax and symbols are observer relative.

3
Computational Machines

• Nothing is intrinsically a (computational)
  machine, although you can assign a computational
  interpretation to it
• The point is not that the claim "The brain is a
  digital computer" is false.

4
Homunculus Fallacy

• Homunculus is in a system interpreting the
  physics in both syntactical and semantic terms.
• Humunculus Fallacy Where is the homunculus when
  we are saying The brain is a turing machine.
• Humunculus fallacy cannot be removed by the
  standard recursive decomposition arguments.