This discussion appears to have completely ignored the concept of a "sensorium" for a definition of consciousness which seems to me to be the only defining requ

This discussion appears to have completely ignored the concept of a "sensorium" for a definition of consciousness which seems to me to be the only defining requirement. Whether or not it is possible to externally detect this is an open question. It is hard to imagine that anything with eyes doesn't have this, and yet functioning eyes are clearly not a requirement. The only requirement at all one would assume is integrated information processing - but even that is not necessarily a given.