Machine consciousness refers to attempts by those who design and analyse informational machines to apply their methods to various ways of understandi… - Igor Aleksander

Consciousness is an incredibly delicate subject because it offend. It's a subject that scientific groups kept away from. They said it was a philosophical concept.

I am not interested so much in behaviour from which you infer consciousness because that is a mug's game. I don't know whether you're conscious. I take a good guess that you are and you can take a good guess that I am but it's not something you can prove. We can't work out what someone else feels.

Trying to understand the brain's abilities leads to philosophical difliculties. Penrose (1994) argues that the task is sterile and that science, including neural networks, has not yet advanced to the stage where it can explain conscious thought. At the other extreme there are philosophers such as Fodor (1975) who believed that thought has language-like properties and can be analysed in the same logical way as one can anlayse the structure of language.