The Human Processor: Extending Human-based Computation to the Logic Level
We explored the feasibility of creating an Arithmetic Logic Unit (ALU) using human actions instead of electronic components. Our system uses the color perception faculty to implement the required logic to construct a computationally complete ALU. Tests showed that subjects were unaware of the fact they were functioning as a crucial computer component. Inherent fallibility of humans and consequences for our system are discussed. This study serves as a proof of concept showing that human-based computation can be extended to the logic level, achieving computational completeness.
Joris Slob, "The Human Processor: Extending Human-based Computation to the Logic Level", Master's Thesis for the Media Technology programme, Leiden University (The Netherlands), 2008